The first ionisation potential (eV) of B...

The first ionisation potential (eV) of Be and B respectively are

A

8.29 eV, 9.32 eV

B

9.32 eV, 9.32 eV

C

8.29 eV, 8.29 eV

D

9.32 eV, 8.29 eV

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The correct Answer is:

D

Ionisation potential of Be is greater than B because of stable fully filled configuration.
`Be implies 1s^(2)2s^(2), Bimplies 1s^(2)2s^(2)2p^(1)`

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