Question

Which of the following relationships is true?
A. Bond dissociation energy of `O_(2) and O_(2)^(-)` are same.
B. Bond dissociation energy of `O_(2)^(+)` is higher than `O_(2)`,
C. Bond dissociation energy of `O_(2)^(-) and O_(2)^(2-)` are same.
D. Bond dissociation energy of `O_(2)^(2-) ` is higher than `O_(2)^(-)`.

Answer 1

Correct Answer - B
M.O. configuration of `O_(2)^(+)`:
`(sigma 1s^(2))(sigma^(**)1s^(2))(sigma2s^(2))(sigma^(**)2s^(2))(sigma2p_(z)^(2))(pi 2p_(x)^(2) = pi 2p_(y)^(2))(pi^(**)2p_(x)^(1))`
B.O. ` = (10-5)/2 = 2.5`
B.O. of `O_(2) = 2 {:[(O_(2)^(+),gt,O_(2),gt,O_(2)^(-),gt,O_(2)^(2-)),(2.5,,2,,1.5,,1)]:}`