State reasons for each of the following :
(i) The N-O bond in is shorter than the N-O bond in .
(ii) is kinetically an inert substance.
(i) The resonating structure of and shows that in two bonds are sharing a double bond while in , 3 bonds are sharing a double bond. That's why has shorter bond than that of
(ii) Because is showing steric hindrance due to 6 (six) fluorine at which make it unable to react further with any other atom.