For `H_(2)` and `He,` the compressibility factor always ……………..with increase in temperature.

Explanation

To solve the question regarding the compressibility factor of hydrogen (H₂) and helium (He) with respect to temperature, we can break it down into the following steps:

### Step 1: Understanding the Compressibility Factor (Z)
The compressibility factor (Z) is defined as the ratio of the molar volume of a real gas (V_real) to the molar volume of an ideal gas (V_ideal) under the same conditions of temperature and pressure. Mathematically, it is expressed as:
\[ Z = \frac{V_{\text{real}}}{V_{\text{ideal}}} \]

### Step 2: Characteristics of Hydrogen and Helium
Hydrogen and helium are both light, non-polar gases with very low molecular masses. Due to their low molecular mass, the intermolecular forces (attractive forces) between the gas molecules are minimal.
...