Pick the odd one out...

Pick the odd one out

A

`1s^(1)`

B

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

C

`1s^(2)2s^(2)2p^(6)3s^(1)`

D

None.

Text Solution

Verified by Experts

The correct Answer is:

A

`H(1s^(1))` is not an alkali metal.

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