PASSAGE-II : In all the organic compounds, the four valencies of carbon atom must be satisfied, either by single, double or triple bonds. It is not possible to get a compound in which the carbon atom has valencies either less or more than four. In these compounds carbon atoms can be linked together in the form of straight chains, branched chains or even ring chains.
The number of `C-H` bonds in ethene `(C_(2)H_(4))` is

Options

A. four
B. six
C. two
D. ten

Explanation

To determine the number of C-H bonds in ethene (C₂H₄), let's analyze the structure of the molecule step by step.

### Step-by-Step Solution:

1. **Identify the Molecular Formula**:
Ethene has the molecular formula C₂H₄. This indicates that there are 2 carbon (C) atoms and 4 hydrogen (H) atoms in the molecule.

2. **Understand the Bonding in Ethene**:
In ethene, the two carbon atoms are connected by a double bond. Each carbon atom must satisfy its tetravalency (four bonds).

3. **Draw the Structure of Ethene**:
The structure of ethene can be represented as follows:
```
H H
\ /
C = C
/ \
H H
```
Here, the double bond between the two carbon atoms is represented by the "=" sign.

4. **Count the C-H Bonds**:
Each carbon atom in ethene is bonded to two hydrogen atoms. Therefore:
- The first carbon (C1) has 2 C-H bonds.
- The second carbon (C2) also has 2 C-H bonds.

5. **Total Number of C-H Bonds**:
Adding the C-H bonds from both carbon atoms:
- C1 contributes 2 C-H bonds.
- C2 contributes 2 C-H bonds.
- Total = 2 + 2 = 4 C-H bonds.

### Final Answer:
The number of C-H bonds in ethene (C₂H₄) is **4**.

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