DEGREE OF FREEDOM

This topic is mainly for the behaviour of gases.

As, we have different gases such as monatomic, diatomic, and polyatomic. These are decided by their degree of freedom.

As the word ‘freedom’ suggests, the independent bahavior which implies the freedom of these gases.

These degree of freedom are of three types: Translational, Rotational and Vibrational degree of freedom.

For monatomic gases: The translational, rotaional and vibrational degree of freedom are 3, 0 and 0 respectively.

For diatomic gases: The translational, rotaional and vibrational degree of freedom are 3, 2 and 1 respectively.

For polyatomic gases: These are of two types

1. Non- linear triatomic: The translational, rotaional and vibrational degree of freedom are 3, 3 and 3 respectively.

2. Linear triatomic: The translational, rotaional and vibrational degree of freedom are 3, 2 and 4 respectively.

The Vibrational degree of freedom is not considered untill it is mentioned because it depends on the inner molecule heat energy.

So, generally the overall degree of freedom is 3, 5, 5 and 6 for monatomic, diatomic, linear triatomic and non-linear triatomic gases respectively.