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AIPMT PRELIMS2009Chemistry-Atomic Structure

AIPMT PRELIMS 2009 Chemistry Quantum Numbers MCQ Question

Type: MCQ-conceptual-Medium-Class 11

Which of the following is not permissible arrangement of electrons in an atom?

A

n = 5, ℓ = 3, m = 0, s = +1/2

B

n = 3, ℓ = 2, m = -3, s = -1/2

C

n = 3, ℓ = 2, m = -2, s = -1/2

D

n = 4, ℓ = 0, m = 0, s = -?

Correct Answer

Option B

Detailed Explanation

For ℓ = 2, m cannot have $a^{-3}$ value. The magnetic quantum number m ranges from -ℓ to +ℓ.

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