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Chemical Bonding and Molecular Structure
Potential energy curve for bond formation
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- Potential energy curve for bond formation
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2020 Phase-2 1 question
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The potential energy (y) curve for $H_2$ formation as a function of internuclear distance (x) of the H atoms is shown below, with asymptote at 'a', minimum at 'b', and reference level at 'c'.
The bond energy of $H_2$ isThe bond energy corresponds to the depth of the potential energy well, i.e. the difference between the potential energy at infinite separation (level 'a') and the minimum potential energy at the equilibrium bond length (level 'b'): bond energy $=(b-a)$ in magnitude (the curve dips to a lower, i.e., more negative, energy at 'b').