Evaluate, by explicit summation, the mean vibrational energy of CCl₄ and plot its value as a function of temperature. At what temperature is the equipartition value within 5 per cent of the accurate value? Use the wavenumbers 459 cm⁻¹ (symmetric stretch, A), 217 cm⁻¹ (deformation, E), 776 cm⁻¹ (deformation, T), 314 cm⁻¹ (deformation, T).