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Question
In \[\ce{NO^{-}3}\] ion, the number of bond pairs and lone pairs of electrons on nitrogen atom are ______.
Options
2, 2
3, 1
1, 3
4, 0
Solution
In \[\ce{NO^{-}3}\] ion, the number of bond pairs and lone pairs of electrons on nitrogen atom are 4, 0.
Explanation:
In N-atom, number of valence electrons = 5
Due to the presence of one negative charge, number of valence electrons = 5 + 1 = 6. One O-atom forms two bonds (= bond) and two O-atom are shared with two electrons of N-atom.
Thus, 3 O-atoms are shared with 8 electrons of N-atom.
Number of bond pairs (or shared pairs) = 4
Number of lone pairs = 0
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