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JEE · NEET Previous Year Question

$The valence electron in alkali metal is a$

Topic: NEET PYQ

Answer: C. Full step-by-step solution below.

A $f ‐electron$
B $p ‐electron$
C $s ‐electron$
D $d ‐electron$

Correct answer: C

Solution

(c) For all first group elements, Na, K, Rb, Cs, Fr . They have one electron in the s subshell.

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