Calculate the formal charge on the nitrogen atom in NH+4.
A
1
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B
-1
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C
0.25
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D
-0.25
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Solution
The correct option is A 1 Formal charge on any atom is calculated as:
Formal charge (FC) = V−L−B2
Where,
V = Total number of valence electrons in the atom.
L = Total number of non bonding(lone pair) electrons in the atom.
B = Total number of bonding (shared) electrons in that particular atom.
For the given structure, we have V=5;L=0;B=8
∴ Formal charge on the nitrogen atom in NH+4(ammonium) ion is: FC=5−0−12×(8)∴FC=1
The formal charge on nitrogen in case of NH+4(ammonium) ion is +1.