Question icon
11 grade chemistry others

Number of angles of 10⁹° 28' is present in CCl₄?
A. 2
B. 4
C. 6
D. 8






Profile image of Aniket Singh
1 Year agoGrade
Answers icon

1 Answer

Profile image of Askiitians Tutor Team
1 Year ago

The compound **CCl₄** (carbon tetrachloride) has a **tetrahedral structure** because the central carbon atom forms four single bonds with chlorine atoms. In a tetrahedral geometry, the bond angles between the atoms are approximately **109.5°**.

The question asks about the number of angles that are **109° 28'**. Here, 109° 28' is nearly 109.5°, which is the bond angle in a tetrahedral molecule like CCl₄.

In a tetrahedral structure:

- There are **4 atoms** (chlorine) bonded to the central atom (carbon).
- Each atom forms an angle with two other atoms, resulting in a **bond angle** of about **109.5°** between them.

### Calculation of the number of such angles:
For a tetrahedral molecule like CCl₄, the number of unique bond angles can be calculated using the combination formula to select pairs of bonds:

\[
\text{Number of bond angles} = \binom{4}{2} = \frac{4 \times (4 - 1)}{2} = 6
\]

Thus, the number of bond angles of approximately 109° 28' in CCl₄ is **6**.

### Final Answer:
**C. 6**