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Which is not s-block element ?...

Which is not s-block element ?

A

`[Ar]4s^(2)3d^(10)4p^(6)5s^1`

B

`1s^(2)2s^(2)2p^1`

C

`[He]2s^(2)2p^(6)3s^1`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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