In the Lewis dot structure for , total number of valence electrons around nitrogen is

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Step 1 — Draw Lewis structure of  (nitrite ion):

Total valence electrons: N(5) + 2×O(6) + 1(charge) = 18 electrons

Step 2 — Lewis structure:
 (with resonance)

In the Lewis structure:
- N forms 1 double bond (4 electrons shared) and 1 single bond (2 electrons shared)
- N has 1 lone pair (2 electrons)

Step 3 — Count electrons around N:
- Double bond: 4 electrons (2 shared pairs)
- Single bond: 2 electrons (1 shared pair)
- Lone pair: 2 electrons
- Total around N = 4 + 2 + 2 = 8 electrons

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