cse • paper_2 • atomic_molecular
[UPSC CSE 2021] Molecular Physics (Q182, 10M)
The first line in the pure rotational spectrum of HCl appears at 21\mathbin{\cdot}18\,\mathrm{cm}^{-1}. Calculate bond length of the molecule. Given atomic masses of H and Cl are 1.008 and 35.45\,\mathrm{amu}, respectively.
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