Number of electrons shared between carbon-carbon atons in ethene is

Options

A. 2
B. 4
C. 6
D. 8

Explanation

To determine the number of electrons shared between carbon-carbon atoms in ethene (C2H4), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure of Ethene**:
- Ethene is an unsaturated hydrocarbon with the molecular formula C2H4. This indicates that it consists of 2 carbon atoms and 4 hydrogen atoms.

2. **Understand the Type of Bonding**:
- In ethene, there is a double bond between the two carbon atoms. A double bond consists of two pairs of shared electrons.

3. **Calculate the Number of Electrons in the Double Bond**:
- Each pair of electrons in a bond is made up of 2 electrons. Since there are two pairs in a double bond, the total number of electrons shared between the two carbon atoms is:
\[ 2 \text{ pairs} \times 2 \text{ electrons per pair} = 4 \text{ electrons} \]

4. **Conclusion**:
- Therefore, the number of electrons shared between the carbon-carbon atoms in ethene is 4.

### Final Answer:
The number of electrons shared between carbon-carbon atoms in ethene is **4**.

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