Question

Out of which CO2, H2O and NO
exhibit rotational spectra and why?​

Answer 1

Answer:

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Explanation:

Since homonuclear molecules such as dinitrogen (N2) have no dipole moment they have no rotation spectrum. Highly symmetric polyatomic molecules, such as carbon dioxide, also have no net dipole moment - the dipoles along the C-O bonds are always equal and opposite and cancel each other out.