The order of the magnitude of first ioni...

The order of the magnitude of first ionisation potentials of `Be,B,N` and `O` is

A

`Ngt O gt Be gt B`

B

`N gt Be gt O gt B`

C

`Be gt B gt N gt O`

D

`B gt Be gt O gt N`

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The correct Answer is:

A

`N gt O gt Be gt B ` Ist ionisation enrgy of `N gt O` because of half filled p - orbital.

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