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Atomic Structure STB Atomic Structure MCQs (STB)#Atomic Structure #Quantum Numbers

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Calculate the approximate wave number for the hydrogen transition n = 4 → n = 2.

Verified Answer & Explanation⌄

Correct Answer: B) 2.06 × 10⁶ m⁻¹

Concept Explanation

For n = 4 → 2, ν̄ = R(1/2² − 1/4²) = 3R/16 ≈ 2.06 × 10⁶ m⁻¹.

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