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The first ionisation energy of B is less...

The first ionisation energy of B is less than that of Be because

A

boron has greater nuclear charge than beryllium

B

in Be, `s-e^(-)` is removed and from B. `p-e^(-)` is removed

C

p-electron of B is more shielded from nucleus

D

both (b) and (c).

Text Solution

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The correct Answer is:
D
both (b) and (c).
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