Question

The statement that is incorrect among the following is

• A. Heat capacity of $He$ is independent of temperature
• B. Heat capacity of a diatomic gas is more than the monoatomic gas
• C. $Xe{F}_2$ has only two rotational degrees of freedom
• D. None of the above

Answer 1

The correct option is D None of the above

A monoatomic gas only translational degrees of freedom. Hence its heat capacity is independent of temperature.

A diatomic gas has rotational and vibrational degrees of freedom in addition to translational degrees of freedom. Hence it has greater heat capacity than a monoatomic gas.

$Xe{F}_2$ is linear and hence it has only two rotational degress of freedom.