Question

For isotopic substitution in a diatomic molecule the separation between rotational energy levels *
5 points
Increases
Decreases
Same
Either increase or decreses​

Answer 1

Explanation:

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The energy and the energy gap between two rotational energy levels of a molecule depends on the isotopic mass of the atoms. The energy and energy gap of a rigid diatomic molecule are reduced with the increasing mass of isotope.

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Answer 2

Answer:

decrease

Explanation:

as rotational energy is inversely related to the reduced mass. as the heavier isotope is substituted then the vibrational energy is decreased.