Q97 · CSIR-NET Chemistry, December 2016

Paper: CSIR-NET December 2016 · Subject: Physical Chemistry · Chapter: Molecular Spectroscopy · Topic: Molecular Spectroscopy – General · Marks: 2 · Difficulty: Easy

The transition that belongs to the Lyman series in the hydrogen-atom spectrum is

(a)$1 s \leftarrow 4 s$

(b)$1 s \leftarrow 4 p$

(c)$2 s \leftarrow 4 s$

(d)$2 s \leftarrow 4 p$

Answer

Answer: B ✓ checked by 4AB · confidence high

Explanation

Lyman lines end on n = 1, and the dipole rule Δl = ±1 requires a p orbital: 1s ← 4p.

Study loop for Molecular Spectroscopy