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The chemical species having same number ...

The chemical species having same number of electrons in the outermost and penultimate shell is

A

`O^(2-)`

B

`Na^+`

C

`Cl^-`

D

`Al^(3+)`

Text Solution

Verified by Experts

The correct Answer is:
C
Configuration of `Cl^-` ion is `1s^2 2s^2 2p^6 3s^2 3p`
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