Bond lengths of homonuclear diatomic molecules can be determined with the help of both
(a)Rotational and vibrational spectroscopy.
(b)Rotational and rotational Raman spectroscopy.
(c)Rotational Raman and electronic spectroscopy.
(d)Vibrational and electronic spectroscopy.
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Homonuclear diatomics have no dipole, so microwave and IR are silent; rotational Raman and the rotational fine structure of electronic spectra give B and hence the bond length.