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Pick the odd one cut...

Pick the odd one cut

A

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

B

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

C

`1s^(2)2s^(2)2p^(6)3s^(2)3s^(6)3d^(10)4s^(1)`

D

None.

Text Solution

Verified by Experts

The correct Answer is:
C
Configuration C i.e., `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(1)` is that of Cu, which is not an alkali metal.
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