4.33. Explain the formation of H2 molecule on the basis of valence bond theory.

4.33. Let us consider the combination between atoms of hydrogen HA and HB and eA and eB be their respective electrons. As they tend to come closer, two different forces operate between the nucleus and the electron of the other and vice versa. The nuclei of the atoms as well as their electrons repel each other. Energy is needed to overcome the force of repulsion. Although the number of new attractive and repulsive forces is the same, but the magnitude of the attractive forces is more. Thus, when two hydrogen atoms approach each other, the overall potential energy of the system decreases. Thus, a stable molecule of hydrogen is formed.

4.33. Explain the formation of H₂ molecule on the basis of valence bond theory.

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Payal Gupta | Contributor-Level 10

10 months ago

4.33. Let us consider the combination between atoms of hydrogen H_A and H_B and e_A and e_B be their respective electrons.

As they tend to come closer, two different forces operate between the nucleus and the electron of the other and vice versa. The nuclei of the atoms as well as their electrons repel e