Count the total number of valence e-:
N → Group 5A → 5 valence e-
O → Group 6A → 6 valence e- x 2 = 12 valence e-
(-) charge → +1 e-
Total valence e- = 18 e‑
Sodium nitrite, which has been used to preserve bacon and other meats, is an ionic compound. Write the resonance forms of the nitrite ion, NO2–.
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