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Question

The formal charge on N in NO2 is:

A
\N
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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 NO2( is:
FC=5212×(6)FC=0

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