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Bond Order and Enthalpy

Bond energy o...

Question

Bond energy of a molecule is:

A

always positive

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B

either positive or negative

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C

always negative

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D

dependent on the physical state of the system

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Solution

The correct option is A always positive
The bond strength in a chemical bond is measured by bond energy or bond enthalpy. It is the energy required to break a bond. As energy has to be supplied for the breakage of a bond, the bond energy of a molecule is always positive.

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