Q39 · CSIR NET Chemistry, June 2021
Paper: CSIR NET June 2021 · Subject: Physical Chemistry · Chapter: Molecular Spectroscopy · Topic: Vibrational · Marks: 2 · Difficulty: Hard
The correct statement from the following set (i) to (iv) is (i) if q is the displacement from equilibrium for harmonic motion, the potential energy is proportional to q (ii) if the vibrational frequency ($\nu$) of HCl is 2990 $\mathrm{cm^{-1}}$, its zero point energy will be 1495 $\mathrm{cm^{-1}}$ (iii) the correct order of vibrational frequency of $\mathrm{O{-}^{1}H}$ ($X_1$), $\mathrm{O{-}^{2}H}$ ($X_2$) and $\mathrm{O{-}^{3}H}$ ($X_3$) is $X_1 > X_2 > X_3$ (iv) the fundamental vibrational transition of a diatomic molecule appears at 1880 $\mathrm{cm^{-1}}$. Its first overtone will be at 940 $\mathrm{cm^{-1}}$ (assuming anharmonicity constant as zero)
(a)i, ii, iii only
(b)i, ii, iii, iv
(c)ii, iii only
(d)i, ii, iv only
Answer
Answer (as printed): C
Explanation
No explanation was printed for this question.
Study loop for Molecular Spectroscopy