Question

Which of the following molecule will be stabilised by losing one elctron from its HOMO ?
A. `C_(2)`
B. `N_(2)`
C. `CN`
D. `O_(2)`

Answer 1

Correct Answer - C
MOEC of `CN[6+7=13]`
`=sigma 1s^(2), overset(**)sigma 1s^(2), sigma 2s^(2), overset(**) sigma 2s^(2), pi 2p_(x)^(2)~~ pi 2P_(y)^(2), sigma 2p_(z)^(1)`
One unpaired unpaired electron present on HOMO (bonding molecular orbital). Hence,loss of electron from upnaired HOMO (highest occupied molecular orbital) give stable electron configuration.