On decreasing the internuclear distance below | vedclass

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(D) When the internuclear distance is decreased below the optimum distance,the electron clouds of the two atoms begin to overlap significantly,and the

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Increase in interelectronic and internuclear repulsions

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(D) When the internuclear distance is decreased below the optimum distance,the electron clouds of the two atoms begin to overlap significantly,and the nuclei come closer to each other.This leads to a sharp increase in the electrostatic repulsions between the electrons of the two atoms (interelectronic repulsion) and between the two positively charged nuclei (internuclear repulsion).These repulsive forces dominate over the attractive forces,causing a steep increase in the potential energy of the system.

On decreasing the internuclear distance below the optimum distance (where potential energy is minimum),there is a steep increase in potential energy due to:

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