For the Na structure use the periodic table to find the total number of valence electr. Lewis (18751946) devised a system of symbolsnow called Lewis electron dot symbols (often shortened to Lewis dot symbols) that can be used for predicting the number of bonds formed by most elements in their compounds. This page titled 4. Electron Dot. 2 (Credit Joy Sheng; Source CK-12 Foundation; License CC BY-NC-SA 3. Questions 47 are short free-response questions that require about 9 minutes each to answer and are worth 4 points each. The Lewis electron dot structures of a few molecules are illustrated in this subsection. Measuring Radioactivity 4m. Electron configuration of Sodium (Na) Ne 3s 1 1s 2 2s 2 2p 6 3s 1 2, 8, 1 12 Electron configuration of Magnesium (Mg). Ionic substances are completely held together by ionic bonds. In a Lewis structure, the valence electrons are divided into two categories Lone pairs pairs of electrons that are localized around a single atom and are not shared with any other atoms. Fully descriptive writeups. The Lewis structure of NaOH consists of one sodium (Na) atom, one oxygen (O) atom, and one hydrogen (H) atom. Draw resonance structures of some molecules. Therefore, the sodium atom gives one electron to produce the sodium. 1 Synthesis of calcium chloride from Elements. Jun 20, 2023 Figure 5. We can also show this on the electron dot diagram by removing the dot representing the valence electron and indicating that sodium has become a positively charged ion by using square brackets, with the charge indicated on the outside of the brackets, showing that sodium has become an ion with a one plus charge. The tendency to form species that have eight electrons in the valence shell is called. Sodium iodide is a source of iodine and can be administered as a supplement for total parenteral nutrition but is more commonly used in veterinary medicine. Lewis and the. Ionic bonds are caused by electrons transferring from one atom to another. What is the purpose of an electron dot diagram Electron dot diagrams, sometimes called Lewis dot diagrams, were first used by Gilbert N. This is required by the law of conservation of matter as well. Radioactive Half-Life 11m. Electron configuration can be done in two ways. For Na3P we have an ionic compound and we need to take that into account when we draw. Therefore, the sodium atom gives one electron to produce the sodium. Similarly, bromine is in the same column as chlorine,. Most of the time, the Lewis structure of the individual ions are ignored. It is possible to draw a structure with a double bond between a boron atom and a fluorine atom in BF 3, satisfying the octet rule, but experimental evidence indicates the bond lengths are closer to that expected for BF single bonds. Assign a dot to each side of the symbol up to a maximum of four valence electron. Figure 1 Bonding in H 2 and methane (C H 4) The other tendency of atoms is to maintain a neutral charge. How do the electron dot diagrams of these elements compare The electron dot diagram of helium has six. The electron dot representation for the formation of Sodium oxide is given above. Notice that the net charge of the resulting compound is 0. Magnesium has an atomic number of 12. This will actually show the bonding between the atoms of the molecule or the lone pairs of the electrons that will exist in the molecules. So NaHCO3 is stable. Look at the electron dot diagram for chlorine. Henry Agnew (UC Davis) 15. Orbit structure and electron dot diagram of MgCl 2 iii. Example 9. See examples of Lewis electron dot symbols for sodium and other elements in the third period of the periodic table, and how they represent valence electrons and chemical bonds. A Lewis electron-dot symbol (or electron-dot symbol or a Lewis symbol) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. Electrons are shown as "dots" or for bonding electrons as a. Draw the Lewis structure of NOF. (CC BY-SA 2. 1 Synthesis of calcium chloride from Elements. The lewis dot structure ignores the nucleus and all non-valence electrons. Both achieve a noble-gas electron. The full charges of the ions (for example, Na and Cl in sodium chloride) cause electrostatic interactions that result in a. John Cole. These dots are arranged to the right and left and above and below the. It is odorless substance. A Lewis electron-dot symbol (or electron-dot symbol or a Lewis symbol) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. For Na2S we have an ionic compound and we need to take that into account when we draw. DrugBank; NCI Thesaurus (NCIt) See also Carbonate Ion (has active moiety); Citric. Sodium (1) is a monoatomic monocation obtained from sodium. On the left, a sodium atom has 11 electrons. 2 2. The compound is the base anhydride for NaOH, as when Na2O reacts with water, it produces NaOH. NaCl is a face-centered cubic unit cell that has four cations and four anions. For the Na structure use the periodic table to find the total number of valence electr. This will actually show the bonding between the atoms of the molecule or the lone pairs of the electrons that will exist in the molecules. Sodium fluoride is a metal fluoride salt with a Na () counterion. For the Na structure use the periodic table to find the total number of valence electr. The N atom has the following Lewis electron dot diagram It has three unpaired electrons, each of which can make a covalent bond by sharing electrons with an H atom. It is a manufactured substance. Choose the correct answer from the options given . Let us discuss about NaF Lewis structure and its 17 facts. Magnesium chloride . Notice how both the electron shell and the lewis dot structures have the same number of valence electrons. A step-by-step explanation of how to draw the NaNO3 Lewis Dot Structure. Fully descriptive writeups. When we write the configuration we'll put all 11 electrons in orbitals around the nucleus of the Sodium atom. 2 4. The number of valence electrons for H is 1. 2 8. In other words, if every element in Group 1A has valence electron, then every Lewis electron dot diagram would have one single dot in their Lewis electron dot. Lewis, the American chemist who introduced them. Overlapping and embracing dot and cross diagrams for covalent bonding. e . Add octet electrons to the atoms bonded to the center atom 4. (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. Lewis (18751946) devised a system of symbolsnow called Lewis electron dot symbols (often shortened to Lewis dot symbols) that can be used for predicting the number of bonds formed by most elements in their compounds. By Aparna Dev. The former, known as a Lewis dot diagram, indicates a pair of shared electrons between the atomic symbols, while the latter, known as a Lewis structure, uses a dash to indicate the pair of shared electrons that form a covalent bond. Similar Questions. Lewis (18751946) devised a system of symbolsnow called Lewis electron dot symbols (often shortened to Lewis dot symbols) that can be used for predicting the number of bonds formed by most elements in their compounds. With the next element, sodium, the process starts over with a single electron because sodium has a single electron in its highest-numbered shell, the n 3 shell. Figure caption,. The periodic table gives the following electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p65s2 4d10 5p6 6s2 4f14 5d10 6p3. The electron dot diagram for helium, with two valence electrons, is as follows mathbfHemathbf nonumber By putting the two electrons together on the same. Drawing Lewis diagrams. Was this answer helpful. This suggests the best Lewis structure has three BF single bonds and an electron deficient boron. A Lewis electron dot diagram (or electron dot diagram, or a Lewis diagram, or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. Principle 3 Covalent Bonding. This text is published under creative commons licensing, for referencing and adaptation, please click here. For NaCl we have an ionic compound and we need to take that into acc. A similar process occurs between Mg atoms and O atoms, except in this case two electrons are transferred The two ions each have octets as. Electron dot diagrams are a way to illustrate the number of valence electrons for an element. Water, H 2 O 2. In order words, a dot structure shows the valence electrons present on the valence shell of an atom. 1 Representing Valence Electrons with Dots is shared under a CC BY-NC-SA 4. Draw an electron dot diagram to show the formation of the following compound. Orbit structure and electron dot diagram of CaO Solution 10 (a) Sodium atom and sodium ion (i) Sodium atom has one electron in M shell while sodium ion has 8 electrons in L shell. To determine the correct electron dot diagram for the compound sodium oxide, we must determine the type of bonding taking place between sodium and oxygen. The valence electron for each Na is 1. Principle 3 Covalent Bonding. When constructing a Lewis diagram, keep in mind the octet rule, which refers to the tendency. Sodium becomes a cation by. It is also known as an alkali metal oxide as it comprises two sodium and one Oxygen atoms. Note in this electron diagram, only the original outer electrons are shown above. Look at the electron dot diagram for sodium. A step-by-step explanation of how to draw the NaCl Lewis Dot Structure (Sodium chloride). A beryllium atom, with two valence electrons, has the electron dot diagram below Figure 8. Electrons are shown as "dots" or for bonding electrons as a. View Solution. Sodium has an atomic number 11, and its electronic configuration 1 s 2 2 s 2 2 p 6 3 s 1 hence, valence electron 1. Two crystalline forms are known, rhombohedral and hexagonal. As mentioned above, the Lewis structure for this molecule will be different as it is an ionic compound. Know the importance of Lewis dot in bonding. For Na3N we have an ionic compound and we need to take that into account when we draw. In the highest-numbered shell, the n 4 shell, there are six electrons. The electron configuration of sodium is Ne 3s 1 , if the electron arrangement is through orbitals. To represent this, we can. As Sodium and Oxygen atoms have an ionic bond, it is also known as an ionic compound. It contains a naproxen (1-). More complicated molecules are depicted this way as well. (See below for details. Electron configuration can be done in two ways. That means that the neutral lithium atom will have the same Lewis diagram that the sodium atom has. Sodium has one valence electron as. Deducing Dot & Cross Diagrams for Ionic Compounds. In the Bohr model, electrons are pictured as traveling in circles at different shells, depending on which element you have. The image below shows how sodium and chlorine bond to form the compound sodium chloride. For example, in the reaction of Na (sodium) and Cl (chlorine), each Cl atom takes one electron from a Na atom. Draw the Lewis structure of NOF. The Lewis electron dot diagram of fluorine, for example, with seven valence electrons, is constructed as follows Figure &92;(&92;PageIndex4&92;) shows the electron configurations and Lewis diagrams of the elements lithium through neon, which is the entire second period of the periodic table. While most main group element form only one cation, elements of the group 4A form two different cations by losing 2 or 4 valence. This represents the nucleus. For NaNO3 we have an ionic compound and we need to take that into account when we dra. Therefore each Na becomes a Na cation and each Cl atom becomes a Cl - anion. Ionic compounds exist as extended, orderly. The electronic dot & cross diagram for the ionic bonding in the ionic compound sodium oxide. Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around. Lewis dot structure of calcium and chlorine. 0 (opens in new window)) Since electrons. Lewis dot symbols can be used to predict the number of bonds formed by elements in a compound. This will actually show the bonding between the atoms of the molecule or the lone pairs of the electrons that will exist in the molecules. Sodium valence electron 1. Sodium Carbonate is the disodium salt of carbonic acid with alkalinizing property. These dots are arranged to the right and left and above and below the. By going. The tendency to form species that have eight electrons in the valence shell. 2 (Credit Joy Sheng; Source CK-12 Foundation; License CC BY-NC-SA 3. These diagrams are called Lewis electron dot diagrams, or simply Lewis diagrams, after Gilbert N. What is the Lewis electron dot diagram for each element aluminum; selenium; Solution. DOI 10. As a result, the valence electron of-. Click herepointup2to get an answer to your question writinghandwrite the electron dot structure of magnesium and oxygen. These dots are arranged to the right and left and above and below the. In other words, if every element in Group 1A has valence electron, then every Lewis electron dot diagram would have one single dot in their Lewis electron dot. 1 5. Jun 29, 2020 A Lewis electron dot diagram (or electron dot diagram, or a Lewis diagram, or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. This electron configuration shows that sodium ion (Na) has acquired the electron configuration of neon (Ne) and it achieves an octave full stable electron configuration. By going. Figure 1 shows the Lewis symbols for the elements of the third period of the periodic table. At the beginning of the 20 th century, an American physical chemist G. Electron configuration can be done in two ways. We can use electron configurations to illustrate the electron transfer process between sodium atoms and chlorine atoms. The valence electron configuration for aluminum is 3s 2 3p 1. (See below for details. These dots are arranged to the right and left and above and below the. A step-by-step explanation of how to draw the NaCl Lewis Dot Structure (Sodium chloride). So, the total valence electrons for Na 2 O 116 8 (as two Na atoms are present). The valence electron for each Na is 1. The Lewis dot structure of Na2S shows that each sodium atom donates one electron to the sulfur atom, resulting in the formation of two sodium ions (Na) and one sulfide ion (S2-). 1 Lewis Electron Dot Structures is shared under a CK-12 license and was authored, remixed, andor curated by CK-12 Foundation. LICENSED UNDER. I show you where Sodium is on the periodic table and how to determine how. This represents the nucleus. So it. Lewis Dot Structures, Formula Units & Ionic Formulas - CLEAR & SIMPLE. Next to the brackets, write Na and that&39;s the Lewis dot structure for sodium. By going through the periodic table, we see that the Lewis electron dot diagrams of atoms will never have more than eight dots around the atomic symbol. Electron dot structure It defines the nature of bond and position of atoms of the molecule which are connected in the molecule. 085; 15 P Phosphorus 30. N a (11) 2 8 1 K L M. This text is published under creative commons licensing, for referencing and adaptation, please click here. The image below shows how sodium and chlorine bond to form the compound sodium chloride. 3 Lewis Structures of Ionic Compounds- Electrons Transferred is shared under a CC BY-NC-SA 4. See examples of Lewis electron dot symbols for sodium and other elements in the third period of the periodic table, and how they represent valence electrons and chemical bonds. Counting valence electrons. 2 Lewis Dot Symbols for the Elements in Period 2. The nitrogen atom shares one electron pair with each oxygen atom, forming a double bond with one oxygen and a single bond with the other. (See below for details. When drawing the structure of an ion, be sure to addsubtract electrons to account for the charge. Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. Lewis dot structure of calcium and chlorine. 1 below lists some common ions of the main group metals. These dots are arranged to the right and left and above and below the. The first electron has the same four quantum numbers as the hydrogen atom electron (n 1, l 0, ml 0, ms 12 m s 1 2). Place any leftover electrons (24-24 0) on the center atom 5. Example 4. The oxygen atom is covalently bonded to each fluorine atom. 2 (Credit Joy Sheng; Source CK-12 Foundation; License CC BY-NC-SA 3. The structure will also display the total number of lone pairs present in each of the atoms that constitute the molecule. (iii) Sodium atom is highly reactive. To draw a Lewis electron dot diagram for sodium you can picture the symbol for sodium in a box with the box having four sides. when sodium reacts with chlorine, electrons transfer from sodium atoms to. 2 4. These dots are arranged to the right and left and above and below the. Example 2. For the Na structure use the periodic table to find the total number of valence electr. Second Shell. The image below shows how sodium and chlorine bond to form the compound sodium chloride. Draw a Lewis electron dot diagram for an atom. For NaHCO3 we have an ionic compound and we need to take that into account when we d. Get the free "Lewis Structure Finder" widget for your website, blog, Wordpress, Blogger, or iGoogle. 0 license and was authored, remixed, andor curated by. The N atom has the following Lewis electron dot diagram It has three unpaired electrons, each of which can make a covalent bond by sharing electrons with an H atom. Naoch3 lewis structure appears as white amorphous powder. For Na2O we have an ionic compound and we need to take that into account when we draw. The tendency to form species that have eight electrons in the valence shell is called. The sodium loses an electron, and the chlorine gains that electron. If sodium were to lose this valence electron, its outer shell would be full and be a stable electron configuration. The full charges of the ions (for example, Na Na and Cl Cl in sodium chloride) cause electrostatic interactions that result in a stable crystal lattice. What Does the Electron Dot (Lewis) Structure of Phosphorus Look Like. Sodium cation is an Osmotic Laxative. 1 Synthesis of calcium chloride from Elements. The ultimate structure puts two electron pairs or sets of two dots on both oxygen. Its electrons are. 1 The figure above shows the electron shells of He (Helium), Cl (Chlorine), and K (Potassium) as well as their Lewis dot structures below. The compound is widely used in ceramics and. Ionic compounds exist as extended, orderly. The number of dots equals the number of valence electrons in the atom. As a salt, this is clearly electrostatically neutral, however, we can dig a bit deeper, and represent its Lewis structure. There is an ionic bond between sodium and chlorine, one atom donates an electron and the other accepts it. To sketch the NaCl Lewis structure by following these instructions Step-1 NaCl Lewis dot Structure by counting valence electrons on the chlorine atom. The valence electron configuration of thallium, whose symbol is Tl, is 6 s2 5 d10 6 p1. Lewis Symbols. Notice how both the electron shell and the lewis dot structures have the same number of valence electrons. Ionic substances are completely held together by ionic bonds. NaCl, sodium chloride, is an IONIC compound, which means electrons are TRANSFERRED from one atom to another. The electron shells are shown, moving outward from the nucleus. This is required by the law of conservation of matter as well. Sodium chloride. Then, draw the metals and nonmetals with their respective. Know the importance of Lewis dot in bonding. Cation formation When sodium (Na) atom loses one electron to get octet electron configuration it forms a cation (Na) and gets electron. walmart kitchen trash cans, isaac 981 fm
But it is insoluble in hydrocarbon like organic solvent. . Sodium electron dot diagram
Learn how to write Lewis symbols for neutral atoms and ions using dots around the symbol of the element. Sodium fluoride is an inorganic chemical compound that is a source of the fluoride ion in many applications, including dental care and radiographic imaging when it is used as Fluoride ion F-18 . The more dots and crosses you see inside, the. With an odd number of electrons, at least one atom in the molecule will have to violate the octet rule. A step-by-step explanation of how to draw the NaNO3 Lewis Dot Structure. In the highest-numbered shell, the n 4 shell, there are six electrons. Na (s) &189;Cl 2(g) NaCl 2. 2 dots representing. Due to their opposite charges, they attract each other to form an ionic lattice. Each azide is linked to six Na centers, with three NaN bonds to each. Sodium valence electron 1. One way to represent this valence electron, visually, was developed by Gilbert N. Determine Lewis structure of a compound. Naproxen sodium is an organic sodium salt consisting of equimolar amounts of naproxen (1-) anions and sodium anions. They are also called Lewis dot diagrams, electron dot diagrams, and electron dot structures. They also show the total number of lone pairs in each of the molecule&39;s atoms. The periodic table gives the following electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p65s2 4d10 5p6 6s2 4f14 5d10 6p3. Having lost its two original valence electrons, the Lewis electron dot diagram is just Ca 2. Question (a) Draw electron dot structure of Sodium (Na), Oxygen (O) and Magnesium (Mg). Step-2 Lewis Structure of NaBr for counting valence electrons around the terminal sodium atoms ; Step-3 Lewis dot Structure for NaBr generated from step-1 and step-2; How to calculate the formal charge on bromine and sodium atoms in NaBr Lewis Structure Calculating formal charge on the bromine of NaBr molecule. It has a role as a non-narcotic analgesic, a cyclooxygenase 2 inhibitor, a cyclooxygenase 1 inhibitor, an antipyretic and a non-steroidal anti-inflammatory drug. 2 Lewis Electron Dot Diagrams is shared under a CC BY-NC-SA 4. Draw another circle around the first shell. Henry Agnew (UC Davis) 15. The number of dots equals the number of valence electrons in the atom. Sodium sulfate is an inorganic compound commonly used in various industries, including. A step-by-step explanation of how to draw the Al2O3 Lewis Dot Structure. 1 4. DrugBank; NCI Thesaurus (NCIt) See also Carbonate Ion (has active moiety); Citric. So it has one outer most shell electron. Together, they combin. This suggests the best Lewis structure has three BF single bonds and an electron deficient boron. Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around. 1107S0365110X52001027; Share. Three sodium atoms lose one electron each, they each become 1 chargeOne phosphorus atom gains those thr. A step-by-step explanation of how to draw the NaCN Lewis Dot Structure. A Lewis structure can be drawn for any. Place any leftover electrons (24-24 0) on the center atom 5. Use app Login. Question 42. The number of dots equals the number of valence electrons in the atom. Draw electron dot representation for the formation of potassium chloride. More complicated molecules are depicted this way as well. Define covalent bond. For Na2S we have an ionic compound and we need to take that into account when we draw. The electrons from one atom are shown as. 2 8. 1) is transferred to the outer shell of the chlorine atom (2. The image below shows how sodium and chlorine bond to form the compound sodium chloride. For the Na structure use the periodic table to find the total number of valence electr. For NaF we have an ionic compound and we need to take that into account when we draw th. Lewis structures are shown as element symbols with. Use a Lewis electron dot diagram to show the covalent bonding in PCl 3. 1 Synthesis of calcium chloride from Elements. All the atoms has zero formal charge. 1 4. For NaCl we have an ionic compound and we need to take that into acc. You'll have to draw the Bohr-Rutherford Diagram o. By going through the periodic table, we see that the Lewis electron dot diagrams of atoms will never have more than eight dots around the atomic symbol. Electron dot diagram 2. ) One possible (and more accurate) Lewis structure is therefore. Having lost its two original valence electrons, the Lewis electron dot diagram is just Ca 2. For NaCN we have an ionic compound and we need to take that into account when we draw. The number of dots equals the number of valence electrons in the atom. Sodium is a group 1 element in periodic table with electronic configuration 1s2 2s2 2p6 3s1. An element is placed in 2nd Group and 3rd Period of the Periodic Table, burns in presence of oxygen to form a basic oxide. Sodium nitride is an inorganic compound composed of three sodium (Na) atoms and one nitrogen (N) atom. 1 Sodium Chloride. This reaction is highly favorable because of the electrostatic attraction between the particles. Na e Na . Electron Dot Diagrams. The other 10 are inside a closed shell with a Neon electron configuration. The lewis dot structure ignores the nucleus and all non-valence electrons. In this example, the sodium atom is donating its 1 valence electron to the chlorine atom. If sodium metal and chlorine gas mix under the right conditions, they will form salt. As a result, there is a positive charge on sodium (due to one lost electron) and a negative charge on chlorine (due to one electron gained). is the Lewis diagram for the formation of sodium oxide. Cl4 C. End points analyzed as part of this assay were maternal toxicity and early postnatal growthviability of offspring. Sodium fluoride is an inorganic chemical compound that is a source of the fluoride ion in many applications, including dental care and radiographic imaging when it is used as Fluoride ion F-18 . Sections 3. Electron Dot Diagram For Sodium - General Wiring Diagram Check Details Lewis dot diagram for n. At the beginning of the 20 th century, an American physical chemist G. In the NaCl lewis dot structure, the sodium atom completes its octet by transferring one electron to the chlorine atom. For NaCl we have an ionic compound and we need to take that into acc. 9 shows the Lewis symbols for the elements of the third period of the periodic table. Its electrons are. Standard X. Lewis and the Octet Rule. 085; 15 P Phosphorus 30. Which do not obey the octet rule (a) NO. It has a role as a non-narcotic analgesic, a cyclooxygenase 2 inhibitor, a cyclooxygenase 1 inhibitor, an antipyretic and a non-steroidal anti-inflammatory drug. Which do not obey the octet rule (a) NO. The lewis dot structure ignores the nucleus and all non-valence electrons. A step-by-step explanation of how to draw the Na2O Lewis Dot Structure. On the right, the sodium ion only has 10 electrons and a 1 charge. A dot structure of an atom shows the number of electrons present on the outermost shell of that atom. 1 Shell diagrams of hydrogen (H), helium (He), lithium (Li), and Berryellium (Be) atoms. The element atomic number and name are listed in the upper left. This molecule has vigorous water affection, soluble in methanol, ethanol. Match the following electron dot diagrams with an element Electron dot diagram 1. 2 Page 43. To draw the Lewis structure of an atom, write the symbol of the atom and draw dots around it to represent the valence electrons. There is an ionic bond between sodium and chlorine, one atom donates an electron and the other accepts it. When dissolved in water or neutralized with acid it liberates substantial heat, which may be sufficient to ignite combustible materials. Having lost its two original valence electrons, the Lewis electron dot diagram is just Ca 2. Example 4. In the highest. These dots are arranged to the right and left and above and below the. The valence electron configuration of thallium, whose symbol is Tl, is 6 s2 5 d10 6 p1. VIEW SOLUTION. The N atom has the following Lewis electron dot diagram It has three unpaired electrons, each of which can make a covalent bond by sharing electrons with an H atom. May 20, 2018 The strength of ionic bonding depends on the magnitude of the charges and the sizes of the ions. Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. . The first electron has the same four quantum numbers as the hydrogen atom electron (n 1, l 0, ml 0, ms 12 m s 1 2). 2 Lewis Dot Symbols for the Elements in Period 2. A Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. 9 shows the Lewis symbols for the elements of the third period of the periodic table. In writing the electron configuration for sodium the first two electrons will go in the 1s orbital. Sodium fluoride is a white solid with molecular formula NaF and molar mass 41. The number of valence electrons for H is 1. . seymour mann doll