Q.

The magnetic quantum number, m for the outermost electron in the sodium atom is

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a

1

b

0

c

2

d

-1

answer is B.

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Detailed Solution

Electronic configuration of sodium = [Ne] 3s1 for s-orbital, l = 0 ,thus "m" must be zero.
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The magnetic quantum number, m for the outermost electron in the sodium atom is