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Which of the following element's outermo...

Which of the following element's outermost orbit's last electron has magnetic quantum number `m = 0`?

A

Na

B

O

C

Cl

D

N

Text Solution

Verified by Experts

The correct Answer is:
A
`._(11)Na = 1s^(2) 2s^(2) 2p^(6) 3s^(-1)` i.e., for last electron l = 0 `:. m = 0`.
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