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Assuming 2s-2p mixing is NOT operative, ...

Assuming `2s-2p` mixing is `NOT` operative, the paramagnetic species among the following is .

A

`Be_(2)`

B

`B_(2)`

C

`C_(2)`

D

`N_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
As it has two unpaired electrons
`Be_(2)=sigma1s^(2)sigma^(**)1s^(2)sigma2s^(2)sigma^(**)2s^(2)`
`B_(2)=sigma1s^(2)sigma^(**)1s^(2)sigma2s^(2)sigma^(**)2s^(2)pi2p_(y)^(1)pi2p_(x)^(1)`
`C_(2)=sigma1s^(2)sigma^(**)1s^(2)sigma2s^(2)sigma^(**)2s^(2)pi2p_(y)^(2)pi2p_(x)^(2)`
`N_(2)=sigma1s^(2)sigma^(**)1s^(2)sigma2s^(2)sigma^(**)2s^(2)pi2p_(y)^(2)pi2p_(x)^(2)sigma2p_(z)^(2)`
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