Bond length order is

Bond length order in various xenon fluorides is

The (C-H) bond length order in hydrocarbons in which the hybridisation of carbon is sp^(3) or sp^(2) or sp

Bond length order among is

Which of the following facts given is not correct? (I) Bond length order, H_(2)^(-)-H_(2)^(+)gtH_(2) (II) O_(2)^(+), NO, N_(2)^(-) have same bond order of 2(1)/(2) (II) Bond order can assume any value including zero upto four (IV) NO_(3)^(-) and BO_(3)^(-) have same order for X-O bond (where X is central atom)