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The molecule having one unpaired electro...

The molecule having one unpaired electron is

A

NO

B

CO

C

`CN^(-)`

D

`CO_(2)`

Text Solution

Verified by Experts

(a) NO has 15 electrons in its molecular orbitals which are distributed as follows
`NO=sigma 1s^(2)overset(**)sigma1s^(2)sigma2s^(2)overset(**)sigma2s^(2)pi2p_(y)^(2)pi2p_(z)^(2)sigma2p_(x)^(2)overset(**)pi2p_(y)^(1)`
As it contains one unpaired electron, hence it is paramagnetic.
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