Question

Nitrogen is the central atom in N O but oxygen is the central atom in OF. aw the four Lewis structures (NNO, NON, FOF and FFO). Use formal charge to explain why you observe NNO and FOF but not NON and FFO? 8. Free radical molecules have unpaired electrons. These molecules start out falantronc Draw the Lewis structures of NO. Indicate

Answer 1

Ans :-

Formal Charge (F.C) = Number of valance electrons on central atom (V) - Number of shared electrons (S)/2 -Number of unshared electrons.

(a).

F.C on first N = 5 - 4/2 - 4 = - 1

F.C on second N = 5 - 8/2 - 0 = 5 - 4 = +1

F.C on O in second resonance structure = 6 - 2/2 - 6 = -1

F.C on first N in second resonance structure = 5 - 6/2 - 2 = 0

ca). NENE Ö: H N o valid structures -.. .. 2- (b). : N30~N: Because oxygen is more electronegative Not rawid Structure than Nitrogen, therefore oxygen do not cauay tue charge. Hence, NON Stowcture is not valid (9). : FocomoF: valid stouctures (d). :For Fr. : Not valid Structure Because Fluorine is morre electronegatrons than oxygen, therefore Fluorine do not carry the charge on it. Hence, FFO Structhere is not valid .