Which of the following statements are correct?
I. Bond order of NO is 2.5
II. Bond order of `NO^(+)` is 3.0
III. Bond order of `O_(2)` is 1.5
IV. Bond order of CO is 3.0

Options

A. I,II,III
B. I,II,IV
C. I,III,IV
D. II,III,IV

Answer

B

Explanation

`BO = (1)/(2) (N_b - N_a) " " N_b`= Number of bonding electrons.
`N_a`= Number of antibonding electrons