1.

The ground state magnetic property of B_(2) and C_(2) molecules will be

Answer»

`B_(2)` paramagnetic and `C_(2)` diamagnetic
`B_(2)` diamagnetic and `C_(2)` paramagnetic
both are diamagnetic
both are paramagnetic.

Solution :`B_(2)` MOLECULE
`sigma1s^(2), sigma*1s^(2), sigma2s^(2),sigma*2S^(2),pi2p_(x)^(1)~~pi2p_(y)^(1)`
(Two UNPAIRED electrons hence paramagnetic)
`C_(2)` molecule `sigma1s^(2), sigma*1s^(2),sigma2s^(2), sigma*2s^(2),pi2p_(x)^(2)~~pi2p_(7)^(2)`
No unpaired electrons hence diamagnetic.


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