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JEE · NEET Previous Year Question

$In the sixth period, the orbitals that are filled are$

Topic: JEE PYQ

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

A $6 s, 4 f, 5 d, 6 p$
B $6 s, 5 d, 5 f, 6 p$
C $6 s, 6 p, 6 d, 6 f$
D $6 s, 5 f, 6 d, 6 p$

Correct answer: A

Solution

(a) Filling of electrons in orbitals in any period takes place as: ns, (n - 2) f (n - 1) d if possible ∴ for sixth period n = 6 orbitals that are filled are 6 s, 4 f, 5 d and 6 p

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