Write the Lewis Structure for NH3.Indicate the number of bonding electron pairs and nonbonding electron pairs around the central atom.Bonding Electron Pairs Nonbonding Electron Pairs
Question
Write the Lewis Structure for NH3.Indicate the number of bonding electron pairs and nonbonding electron pairs around the central atom.Bonding Electron Pairs Nonbonding Electron Pairs
Solution
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Identify the total number of valence electrons. Nitrogen (N) has 5 valence electrons and Hydrogen (H) has 1 valence electron. Since there are 3 Hydrogen atoms, the total number of valence electrons is 5 + 3(1) = 8.
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Draw a skeleton structure of the molecule. Nitrogen is the central atom and the Hydrogen atoms are surrounding it.
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Distribute the electrons among the atoms. Start by placing a pair of electrons (which forms a bond) between the Nitrogen and each Hydrogen atom. This uses up 6 electrons, leaving 2.
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Place the remaining electrons on the central atom (Nitrogen). This uses up the remaining 2 electrons.
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Check your structure. Nitrogen should have 8 electrons (2 in each of its
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