JEE Main 2022 · 29 Jul · Shift 2 · Chemistry Q62

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ChemistrySingle correct+4 / -1Question 62 of 90

Given below are the quantum numbers for 4 electrons.

A. n = 3, l = 2, m $_l$ = 1, m $_s$ = +1/2
B. n = 4, l = 1, m $_l$ = 0, m $_s$ = +1/2
C. n = 4, l = 2, m $_l$ = −2, m $_s$ = −1/2
D. n = 3, l = 1, m $_l$ = −1, m $_s$ = +1/2

The correct order of increasing energy is

D < B < A < C

D < A < B < C

B < D < A < C

B < D < C < A

Answer and worked solution

Official answer: B

(n + l) rule. D 3p (4), A 3d (5, n = 3), B 4p (5, n = 4), C 4d (6). Order D < A < B < C.

(B)

Topics:Quantum numbers Electronic configuration

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JEE Main 2022 · 29 Jul · Shift 2, Chemistry question 62