The half-life period of a first order reaction having rate constant `k=0.231×10^(−10)s^(−1)` will be:

Explanation

To find the half-life period of a first-order reaction with a given rate constant \( k = 0.231 \times 10^{-10} \, s^{-1} \), we can use the formula for the half-life of a first-order reaction:

### Step-by-Step Solution:

1. **Identify the formula for half-life of a first-order reaction:**
The half-life \( t_{1/2} \) for a first-order reaction is given by the formula:
\[
t_{1/2} = \frac{0.693}{k}
...