Which of the following combination of bond pair (b.p.) and lone pair (l.p.) give same shape ?
(i) 3 b.p.+1 l.p. (ii) 2 b.p.+2 l.p. (iii) 2 b.p.1 l.p. (iv) 2 b.p. + 0 l. p.
(v) 3 b.p. +2 l.p. (vi) 2 b.p.+3 l.p.

Options

A. ii and iii
B. iv and v
C. iv and vi
D. iii and vi

Explanation

To determine which combinations of bond pairs (b.p.) and lone pairs (l.p.) give the same shape, we can analyze each combination step by step.

### Step 1: Identify the Shapes of Each Combination

1. **3 b.p. + 1 l.p.**:
- This combination typically forms a **trigonal pyramidal shape**. An example is ammonia (NH₃).

2. **2 b.p. + 2 l.p.**:
- This combination results in a **bent (or V-shaped) structure**. An example is water (H₂O).

3. **2 b.p. + 1 l.p.**:
- This combination also leads to a **bent (or V-shaped) structure**. An example is sulfur dioxide (SO₂).

4. **2 b.p. + 0 l.p.**:
- This combination results in a **linear shape**. An example is beryllium chloride (BeCl₂).

5. **3 b.p. + 2 l.p.**:
- This combination forms a **T-shaped structure**. An example is chlorine trifluoride (ClF₃).

6. **2 b.p. + 3 l.p.**:
- This combination also results in a **linear shape**. An example is xenon difluoride (XeF₂).

### Step 2: Compare the Shapes

Now, let's summarize the shapes we found:

- **3 b.p. + 1 l.p.**: Trigonal pyramidal
- **2 b.p. + 2 l.p.**: Bent
- **2 b.p. + 1 l.p.**: Bent
- **2 b.p. + 0 l.p.**: Linear
- **3 b.p. + 2 l.p.**: T-shaped
- **2 b.p. + 3 l.p.**: Linear

### Step 3: Identify Combinations with the Same Shape

From our analysis, we can see:

- The combinations **2 b.p. + 2 l.p.** and **2 b.p. + 1 l.p.** both give a **bent shape**.
- The combinations **2 b.p. + 0 l.p.** and **2 b.p. + 3 l.p.** both give a **linear shape**.

### Conclusion

The combinations that give the same shape are:
- **2 b.p. + 2 l.p.** and **2 b.p. + 1 l.p.** (both bent)
- **2 b.p. + 0 l.p.** and **2 b.p. + 3 l.p.** (both linear)

### Final Answer

The correct combinations that give the same shape are:
- **(ii) 2 b.p. + 2 l.p.** and **(iii) 2 b.p. + 1 l.p.** (both bent)
- **(iv) 2 b.p. + 0 l.p.** and **(vi) 2 b.p. + 3 l.p.** (both linear)