The valency of C atom in `C Cl_4` is

Options

A. 1
B. 2
C. 3
D. 4

Explanation

To determine the valency of the carbon atom in CCl₄ (carbon tetrachloride), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Chemical Formula**:
- The chemical formula for carbon tetrachloride is CCl₄. This indicates that one carbon atom is bonded to four chlorine atoms.

2. **Understand Valency**:
- Valency is defined as the combining power of an element, which is determined by the number of electrons an atom can gain, lose, or share to achieve a stable electron configuration (usually an octet).

3. **Determine the Atomic Number of Carbon**:
- The atomic number of carbon (C) is 6. This means it has 6 electrons.

4. **Find the Electronic Configuration of Carbon**:
- The electronic configuration of carbon is 1s² 2s² 2p². This shows that carbon has 4 electrons in its outermost shell (2 in the 2s subshell and 2 in the 2p subshell).

5. **Determine the Valency of Carbon**:
- Since carbon has 4 electrons in its outermost shell, it can share these 4 electrons with other atoms to form covalent bonds. Therefore, the valency of carbon is 4.

6. **Analyze the Structure of CCl₄**:
- In CCl₄, each chlorine atom (which has a valency of 1) shares one electron with the carbon atom. Since there are 4 chlorine atoms, carbon shares its 4 electrons to form 4 covalent bonds.

7. **Conclusion**:
- Thus, the valency of the carbon atom in CCl₄ is 4, as it can form 4 bonds by sharing its 4 valence electrons.

### Final Answer:
The valency of the carbon atom in CCl₄ is **4**.

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