The average bond length of a molecule can change slightlywith vibrational state. In 2³Na3$Cl, the frequency of lightabsorbed in a change from the J = 1 to the J = 2 rota-tional state in the ground vibrational state (n = 0) wasmeasured to be v = 2.60511 × 1010 s-1, and that for achange from J = 1 to J = 2 in the first excited vibrationalstate (n1) was v =2.58576 x 1010 s-1. Calculate the average bond lengths of NaCl in these two vibrationalstates, taking the relative atomic mass of 2³Na to be22.9898 and that of 35C1 to be 34.9689.

First, evaluate the reduced mass (μ) of the diatomic molecule of NaCl from the given relative atomic…

Answered: The average bond length of a molecule…

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