Question

multiple choice question
the vsepr model says that the shape of a molecule will ______.

• minimize interactions between electron pairs because they repel one another
• maximize interactions between electron pairs because they attract one another
• maximize interactions between electron pairs because they repel one another
• minimize interactions between electron pairs because they attract one another

Explanation:

The VSEPR (Valence - Shell Electron - Pair Repulsion) model is based on the idea that electron pairs (both bonding and non - bonding) in the valence shell of an atom repel each other. To achieve a stable molecular structure, the molecule will adopt a shape that minimizes these repulsive interactions.

• The second option is wrong because electron pairs repel, not attract, so maximizing interactions due to attraction is incorrect.
• The third option is wrong as electron pairs repel, and we want to minimize, not maximize, interactions when they repel.
• The fourth option is wrong because electron pairs repel, not attract, so the reason about attraction is incorrect.
• The first option is correct as it states that the shape of a molecule will minimize interactions between electron pairs because they repel one another, which is in line with the VSEPR theory.

Answer:

A. minimize interactions between electron pairs because they repel one another