Q96 · CSIR-NET Chemistry, December 2016

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

Vibrations of diatomic molecules are usually modelled by a harmonic potential. If the potential is given by $\mathrm{x}^{2}$, the correct statement is
(a)Force is $2 x$ and force constant is 2
(b)Force is $-2 x$ and force constant is 2
(c)Force is $2 x$ and force constant is -1
(d)Force is $-2 x$ and force constant is -1
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
V = x²: F = −dV/dx = −2x; k = d²V/dx² = 2.

Study loop for Molecular Spectroscopy

1. Practise the PYQsPrevious-year questions, with answers

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