The valence electrons of magnesium is different in ........... qu… - Vidyadip

MCQ

The valence electrons of magnesium is different in ........... quantum number.

A
m
B
n
C
l
D
s

✓

Answer

s

Explanation:

The configuration of magnesium is 1s² 2s² 2p⁶ 3s².

The outermost electron is in s orbital and is paired.

Therefore, for the two electrons in 3s orbital, only s, spin quantum number is different.

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