Find de-Broglie wavelength corresponding to the root-mean square velocity of hydrogen molecules at room temperature `(20^@C)`.

Calculate for hydrogen at 27^(@)C root mean square velocity of the molecules.

At a given temperature the root mean square velocities of oxygen and hydrogen molecules are in the ratio

The kinetic theory of gases states that the average squared velocity of molecules varies linearly with the mean molecular weight of the gas. If the root mean square (rms) velocity of oxygen molecules at a certain temperature is 0.5 km/sec. The rms velocity for hydrogen molecules at the same temperature will be :

Find the de Broglie wavelength of hydrogen molecules, which corresponds to their most probable velocity at room temperature.

Assertion : The de - Broglie wavelength of a molecule varies inversely as the square root of temperature. Reason : The root mean square velocity of the molecule depends on the temperature.