what is the cloud electronic configuration of Be and carbon and what these atoms have any unpair

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Solution

Dear student

The electronic configuration of Be is 1s²2s²
and that of C is 1s²2s²2p²

In the case of Be there are no unpaired electrons as both the s orbitals have paired electrons. Whereas in the case of C, there are two unpaired electrons in each p orbital and thus it is paramagnetic.

Regards

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what is the cloud electronic configuration of Be and carbon and what these atoms have any unpair

Dear student The electronic configuration of Be is 1s22s2 and that of C is 1s22s22p2 In the case of Be there are no unpaired electrons as both the s orbitals have paired electrons. Whereas in the case of C, there are two unpaired electrons in each p orbital and thus it is paramagnetic. Regards