Question

postulates of VSEPR theory?

Answer 1

Hi there,

1.There is repulsion between two lone pairs is greater than the repulsion between a lone pair and a bond pair.

2.The shape of a molecule depends upon the total number of valence shell electron pairs.

3.It states that electron pairs in the valence shell of an atom repel each other; their molecular geometry is the result of this repulsion.

Hope it has Help !

Answer 2

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Main postulates of VSEPR theory :-

• 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