Which of the following is correct regarding repulsive interaction?a)Lone pair-Lone pair is greater than Lone pair-Bond pair is greater than Bond pair-Bond pairb)Lone pair-Lone pair is less than Lone pair-Bond pair is less than Bond pair-Bond pairc)Lone pair-Bond pair is greater than Lone pair-Lone pair is greater than Bond pair-Bond paird)Lone pair-Lone pair is greater than Lone pair-Bond pair is less than Bond pair-Bond pairCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

The correct answer is option 'A'.

Explanation:
Repulsive interactions refer to the repulsion between electrons in a molecule. The repulsion occurs due to the negative charges carried by the electrons. To understand the correct order of repulsive interactions, we need to consider the electron pairs involved in a molecule.

The different types of electron pairs in a molecule are:
1. Lone pairs: These are the pairs of electrons that are not involved in bonding and are localized on an atom.
2. Bond pairs: These are the pairs of electrons that are involved in bonding and are shared between two atoms.

Now let's analyze each option to determine the correct order of repulsive interactions:

a) Lone pair-Lone pair is greater than Lone pair-Bond pair is greater than Bond pair-Bond pair:
- This option suggests that the repulsion between lone pairs is greater than the repulsion between lone pairs and bond pairs, and the repulsion between bond pairs is the least.
- Lone pairs have a greater repulsive interaction compared to bond pairs because lone pairs are localized on an atom and experience stronger repulsion.
- This option correctly describes the repulsive interactions, as lone pair-lone pair interaction is the greatest, followed by lone pair-bond pair interaction, and bond pair-bond pair interaction being the least.

b) Lone pair-Lone pair is less than Lone pair-Bond pair is less than Bond pair-Bond pair:
- This option suggests that the repulsion between lone pairs is less than the repulsion between lone pairs and bond pairs, and the repulsion between bond pairs is the greatest.
- This contradicts the known behavior of repulsive interactions, as lone pairs experience stronger repulsion compared to bond pairs.

c) Lone pair-Bond pair is greater than Lone pair-Lone pair is greater than Bond pair-Bond pair:
- This option suggests that the repulsion between lone pair-bond pair is greater than the repulsion between lone pair-lone pair, and the repulsion between bond pairs is the least.
- This contradicts the known behavior of repulsive interactions. Lone pair-lone pair repulsion is greater than lone pair-bond pair repulsion.

d) Lone pair-Lone pair is greater than Lone pair-Bond pair is less than Bond pair-Bond pair:
- This option suggests that the repulsion between lone pairs is greater than the repulsion between lone pairs and bond pairs, and the repulsion between bond pairs is the least.
- This contradicts the known behavior of repulsive interactions, as lone pair-bond pair repulsion is greater than bond pair-bond pair repulsion.

In conclusion, option 'A' is correct as it correctly describes the order of repulsive interactions: Lone pair-Lone pair repulsion is greater than Lone pair-Bond pair repulsion, which is greater than Bond pair-Bond pair repulsion.

Answer

The repulsive interactions follow the above order. The lone pairs are localized on the central atom, each bonded pair is shared between two atoms. So, the lone pair electrons in a molecule occupy more space as compared to the bonding pairs of electrons.

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