At `STP`, the order of mean square velocity of molecules of `H_(2)`, `N_(2)`, `O_(2)`, and `HBr` is

Options

A. `H_(2)gtN_(2)gtO_(2)gtHBr`
B. `HBrgtO_(2)gtM_(2)gtH_(2)`
C. `HBrgtH_(2)gtO_(2)gtN_(2)`
D. `N_(2)gtO_(2)gtH_(2)gtHBr`

Explanation

To determine the order of mean square velocity of molecules of \( H_2 \), \( N_2 \), \( O_2 \), and \( HBr \) at standard temperature and pressure (STP), we can use the relationship between the root mean square velocity (\( \mu_{rms} \)) and molar mass.

### Step-by-Step Solution:

1. **Understand the Formula**:
The root mean square velocity (\( \mu_{rms} \)) of gas molecules is given by the formula:
\[
\mu_{rms} = \sqrt{\frac{3RT}{M}}
...