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Question

Chemical bond formation takes place when:
forces of repulsion overcome forces of attraction.
forces of attraction are equal to forces of repulsion.
forces of attraction overcome forces of repulsion.
energy is absorbed.

A

forces of attraction are equal to forces of repulsion.

B

energy is absorbed.

C

forces of attraction overcome forces of repulsion.

D

forces of repulsion overcome forces of attraction.

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Solution

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Chemical bond formation takes place between two or more atoms. Initially, the two atoms are infinite distance apart. Here, there are neither any forces of attraction nor repulsion. When the two atoms start approaching one another, two forces come into play.

The forces of attraction between the nucleus of one atom and the electrons of the other and the forces of repulsion between the nucleus of two atoms and the forces of repulsion between the electrons of two atoms. The distance at which the forces of attraction are just balanced by the forces of repulsion, bond formation takes place.

Hence, the correct option is D.

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