Compound having maximum number of bonded pairs of electrons in its molecule is

Options

A. Ethane
B. Ammonia
C. Sulphur hexafluoride
D. Bromine Pentafluoride

Answer

To determine the compound with the maximum number of bonded pairs of electrons, we will analyze the structures of a few compounds and count their bonded pairs.

### Step 1: Understanding Bonded Pairs of Electrons
A bonded pair of electrons is formed when two atoms share a pair of electrons in a covalent bond. Each bond (single, double, or triple) contributes to the total count of bonded pairs.

### Step 2: Analyze Ethane (C2H6)
1. **Structure of Ethane**: Ethane consists of two carbon atoms and six hydrogen atoms.
- The structure can be represented as:
```
H H
\ /
C
/ \
H C
/ \
H H
```
2. **Counting Bonds**:
- Each carbon atom forms 4 bonds (2 with hydrogen and 2 with the other carbon).
- Total bonds = 7 (6 C-H bonds + 1 C-C bond).
3. **Bonded Pairs**:
- Since each bond represents one pair of electrons, ethane has 7 bonded pairs of electrons.

### Step 3: Analyze Sulfur Hexafluoride (SF6)
1. **Structure of SF6**: Sulfur hexafluoride consists of one sulfur atom and six fluorine atoms.
- The structure can be represented as:
```
F
|
F--S--F
|
F
|
F
```
2. **Counting Bonds**:
- Sulfur forms 6 bonds with the six fluorine atoms.
3. **Bonded Pairs**:
- Therefore, SF6 has 6 bonded pairs of electrons.

### Step 4: Analyze Bromine Pentafluoride (BrF5)
1. **Structure of BrF5**: Bromine pentafluoride consists of one bromine atom and five fluorine atoms.
- The structure can be represented as:
```
F
|
F--Br--F
|
F
|
F
```
2. **Counting Bonds**:
- Bromine forms 5 bonds with the five fluorine atoms.
3. **Bonded Pairs**:
- Thus, BrF5 has 5 bonded pairs of electrons.

### Step 5: Conclusion
After analyzing the compounds:
- Ethane (C2H6) has 7 bonded pairs of electrons.
- Sulfur hexafluoride (SF6) has 6 bonded pairs of electrons.
- Bromine pentafluoride (BrF5) has 5 bonded pairs of electrons.

Therefore, the compound with the maximum number of bonded pairs of electrons is **Ethane (C2H6)**.

### Final Answer
The compound having the maximum number of bonded pairs of electrons in its molecule is **Ethane (C2H6)**.

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