Why molar specific heat of diatomic gas is larger than that of mono atomic gas?

The molar specific heat of diatomic gases is larger than that of monatomic gases because diatomic gases have more degrees of freedom. While monatomic gases can only store energy through translational motion, diatomic gases can store energy in translational, rotational, and vibrational modes. This additional ability to rotate and vibrate requires more energy, resulting in a higher molar specific heat for diatomic gases compared to monatomic gases.