Question

state the postulates of VSEPR theory​

Answer 1

Answer:

1. Shape of electron depends on number of valence shell electron pair

2. Electron pair repel each other surrounding the central atom

3. Electron pair occupy positions where there is minimum repulsion.

Answer 2

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• The shape of a molecule depends upon the number of electron pairs in the valence shell of the central atom.
• Electron pair in the valence shell repel one another since their electron clouds are negatively charged.
• The electron pairs in the valence shell occupy their position in space around the central atom in a such a way that the distance between them is maximum and the molecule acquires a state of minimum energy and maximum stability.
• The repulsive interactions, of electron pairs decrease in the order → lone pair-lone pair > lone pair-bond pair > bond pair-bond pair
• The repulsion is maximum in the body when the angle is 90⁰ and minimum at 180⁰