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B
1
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C
-1
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D
+12
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Solution
The correct option is A \N Formal charge on any atom is calculated as:
Formal charge (FC) = V−L−B2
Where, V = Total number of valence electrons in the valence shell of the atom. L = Total number of non bonding (lone pair) electrons of the atom. B = Total number of bonding (shared) electrons of that particular atom.
From the given structure, for nitrogen, we have V=5;L=2;B=6
∴ Formal charge on the nitrogen atom in NO−2( is: FC=5−2−12×(6)∴FC=0