The internal energy of a system is the sum of

Options

(a) vibrational energy and electronic energy
(b) vibrational energy and rotational energy
(c) vibrational energy, rotational energy, electronic energy and translational energy
(d) rotational energy and electronic energy

Correct Answer:

vibrational energy, rotational energy, electronic energy and translational energy

Explanation:

Internal energy is sum of all the energies.