Question

Calculate the formal charge on N-atom in the following:

\[\ce{\overset{\bullet\bullet}{\underset{\bullet\bullet}{O}} = N - \overset{\bullet\bullet}{\underset{\bullet\bullet}{O}}:^-}\]

Options

• 0

• – 1

• + 1

• – 2

Answer 1

0

Explanation:

F.C. = A – B – `1/2`C

A = Total no. of valence e^– in free atom = 5

B = Total no. of non-bonding electrons = 2

C = Total no. shared e^– in bond = 6

∴ F.C. = 5 – 2 – `1/2` × 6 = 0