JEE MAIN - Chemistry (2020 - 4th September Morning Slot - No. 12)

The intermolecular potential energy for the molecules A, B, C and D given below suggests that :
A-B has the stiffest bond
A-D has the shortest bond length
A-A has the largest bond enthalpy
D is more electronegative than other atoms

Explanation

From the given graph, potential energy of A-B molecule is minimum.

Thus A-B bond is most stable as it requires more energy to dissociate and have strongest bond amongst these.

B = Most electronegative

D = Least electronegative

A - B = Shortest bond length

A - B = Largest bond enthalpy

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