Predict the correct order among the following:

Options

A. bond pair - bond pair `gt` lone pair - bond - pair `gt` lone pair-lone pair
B. lone pair - bond pair `gt` bond pair - bond pair `gt` bone pair - lone pair
C. lone pair - lone pair `gt` lone pair - bond pair `gt` bond pair - bond pair
D. lone pair - lone pair `gt` bond pair - bond pair `gt` lone pair- bond pair.

Explanation

To predict the correct order of repulsion among bond pairs and lone pairs, we can use the Valence Shell Electron Pair Repulsion (VSEPR) theory. Here’s a step-by-step solution:

### Step 1: Understand the types of pairs
We have three types of pairs to consider:
1. Bond Pair - Bond Pair (BP-BP)
2. Bond Pair - Lone Pair (BP-LP)
3. Lone Pair - Lone Pair (LP-LP)

### Step 2: Determine the repulsion order
According to VSEPR theory, the repulsion between these pairs can be ranked based on their interactions:
- **Lone Pair - Lone Pair (LP-LP)**: This has the highest repulsion because lone pairs are localized on the central atom and occupy more space.
- **Lone Pair - Bond Pair (LP-BP)**: This has a moderate repulsion. Lone pairs repel bond pairs more than bond pairs repel each other.
- **Bond Pair - Bond Pair (BP-BP)**: This has the least repulsion because bond pairs are shared between two atoms and are more stable.

### Step 3: Write the order of repulsion
Based on the analysis:
1. **Lone Pair - Lone Pair (LP-LP)** >
2. **Lone Pair - Bond Pair (LP-BP)** >
3. **Bond Pair - Bond Pair (BP-BP)**

### Step 4: Conclusion
The correct order of repulsion from highest to lowest is:
**Lone Pair - Lone Pair > Lone Pair - Bond Pair > Bond Pair - Bond Pair**

### Final Answer
The correct order is: **Lone Pair - Lone Pair > Lone Pair - Bond Pair > Bond Pair - Bond Pair**

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