Which property among the following is same for both hydrogen and deuterium molecules?

Bond energy

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Melting point

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Boiling point

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Bond length

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Solution

The correct option is D Bond length
Property Hydrogen
Deuterium
Bond length (pm)
74.14 74.14
Bond energy (kJ/mol)
435.88
443.35
Melting point (K)
13.96
18.73
Boiling point (K)
20.39 23.67
Bond length is same for both hydrogen and deuterium molecules.

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