Q92 · CSIR-NET Chemistry, June 2012

Paper: CSIR-NET June 2012 · Subject: Physical Chemistry · Chapter: Statistical Thermodynamics · Topic: Partition Functions · Marks: 2 · Difficulty: Medium

The electric-dipole allowed transition among the following is

(a)${ }^{3} \mathrm{S} \rightarrow{ }^{3} \mathrm{D}$

(b)${ }^{3} \mathrm{S} \rightarrow{ }^{3} \mathrm{P}$

(c)${ }^{3} \mathrm{S} \rightarrow{ }^{1} \mathrm{D}$

(d)${ }^{3} \mathrm{S} \rightarrow{ }^{1} \mathrm{F}$

Answer

Answer: D ✓ checked by 4AB · confidence high

Explanation

q = Σ e^{−nhν/kT} = 1/(1 − e^{−hν/kT}); with T = hν/k this is 1/(1 − 1/e).

Study loop for Statistical Thermodynamics