Predict the correct order of repulsions among the following :

Options

A. bond pair-bond pair `gt ` lone pair-bond pair `gt`
lone pair -lone pair
B. lone pair-bond pari `gt` bond pair-bond pair `gt`
lone 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 repulsions among lone pairs and bond pairs, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Types of Electron Pairs**:
- There are two types of electron pairs: lone pairs (non-bonding) and bond pairs (bonding).
- Lone pairs are localized on the central atom, while bond pairs are shared between two atoms.

2. **Understand Repulsion Strength**:
- According to VSEPR (Valence Shell Electron Pair Repulsion) theory, the repulsion strength between different types of electron pairs varies.
- The order of repulsion strength is as follows:
- Lone pair - Lone pair (LP-LP) repulsion is the strongest.
- Lone pair - Bond pair (LP-BP) repulsion is moderate.
- Bond pair - Bond pair (BP-BP) repulsion is the weakest.

3. **Establish the Order of Repulsions**:
- Based on the understanding of repulsion strengths:
- LP-LP > LP-BP > BP-BP
- This means that the repulsion between lone pairs is greater than the repulsion between lone pairs and bond pairs, which in turn is greater than the repulsion between bond pairs.

4. **Conclusion**:
- The correct order of repulsions is:
- Lone pair - Lone pair (LP-LP) > Lone pair - Bond pair (LP-BP) > Bond pair - Bond pair (BP-BP).

### Final Order:
- LP-LP > LP-BP > BP-BP

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