Number of bonded electrons in ethane molecule are

Options

A. 7
B. 12
C. 10
D. 14

Answer

To determine the number of bonded electrons in an ethane molecule (C2H6), we can follow these steps:

### Step 1: Understand the structure of ethane
Ethane is a hydrocarbon with the molecular formula C2H6. It consists of two carbon atoms and six hydrogen atoms. The structure can be represented as:
```
H H
| |
H - C - C - H
| |
H H
```

### Step 2: Identify the types of bonds in ethane
In ethane, each carbon atom forms single bonds with three hydrogen atoms and one single bond with the other carbon atom. Therefore, we can summarize the bonding as follows:
- Each carbon (C) atom is bonded to three hydrogen (H) atoms.
- There is one carbon-carbon (C-C) bond.

### Step 3: Count the total number of bonds
- Each C-H bond is a single bond, and there are 6 C-H bonds (3 for each carbon).
- There is 1 C-C bond.

Thus, the total number of bonds in ethane is:
- C-H bonds: 6
- C-C bonds: 1
- Total bonds = 6 + 1 = 7 bonds

### Step 4: Calculate the number of bonded electrons
Each bond consists of 2 electrons. Therefore, to find the total number of bonded electrons, we multiply the total number of bonds by 2:
- Total bonded electrons = Number of bonds × 2 electrons/bond
- Total bonded electrons = 7 bonds × 2 electrons/bond = 14 electrons

### Conclusion
The total number of bonded electrons in the ethane molecule (C2H6) is **14**.