The boiling point of Kr and Rn are -152°C and -62°C respectively. Find the approximate boiling point o fXe.

Explanation

To find the approximate boiling point of Xenon (Xe) using the boiling points of Krypton (Kr) and Radon (Rn), we can apply the law of triads. According to this law, the middle element's property (in this case, boiling point) can be estimated as the average of the properties of the two outer elements.

### Step-by-Step Solution:

1. **Identify the boiling points of Krypton and Radon:**
- Boiling point of Krypton (Kr) = -152°C
- Boiling point of Radon (Rn) = -62°C

2. **Apply the law of triads:**
- According to the law, the boiling point of Xenon (Xe) can be calculated as:
\[ \text{Boiling point of Xe} = \frac{\text{Boiling point of Kr} + \text{Boiling point of Rn}}{2} \]

3. **Substitute the values:**
\[ \text{Boiling point of Xe} = \frac{-152°C + (-62°C)}{2} \]

4. **Calculate the sum:**
\[ -152°C + (-62°C) = -214°C \]

5. **Divide by 2 to find the average:**
\[ \text{Boiling point of Xe} = \frac{-214°C}{2} = -107°C \]

Thus, the approximate boiling point of Xenon (Xe) is **-107°C**.