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Q.Which set of quantum numbers represents the valence electron of an alkali metal in the 4th4^{th} period?

a
n=4,l=1,ml=0n=4, l=1, m_l=0
b
n=4,l=0,ml=0n=4, l=0, m_l=0
c
n=3,l=0,ml=0n=3, l=0, m_l=0
d
n=4,l=2,ml=1n=4, l=2, m_l=1

Correct Answer: Option B

The correct solution involves applying the fundamental concept to derive the final value step by step...

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