Chemical Bonding and Molecular Structure - Result Question 124
####128. Mark the incorrect statement in the following
[1994]
(a) The bond order in the species $O_2, O_2{ }^{+}$and $O_2^{-}$decreases as $O_2^{+}>O_2>O_2^{-}$
(b) The bond energy in a diatomic molecule always increases when an electron is lost
(c) Electrons in antibonding M.O. contribute to repulsion between two atoms.
(d) With increase in bond order, bond length decreases and bond strength increases.
Show Answer
Solution:
- (b) The removal of an electron from a diatomic molecule may increase or decrease the bond order.
Removal of an electron from bonding orbital results in decrease of bond order, hence reduces bond strength while removal of an electron from antibonding orbital results into increase in bond order hence increases the bond strength.
