The isotopes of hydrogen have different physical properties due to difference in mass. They have almost same chemical properties with a difference in their rates of reactions which is mainly due toA. their different enthalpy of bond dissociationB. different electronic configurationsC. different atomic massesD. different physical properties.

The isotopes of hydrogen have different physical properties due to dif

1.	The isotopes of hydrogen have different physical properties due to difference in mass. They have almost same chemical properties with a difference in their rates of reactions which is mainly due toA. their different enthalpy of bond dissociationB. different electronic configurationsC. different atomic massesD. different physical properties.
Answer» Correct Answer - A Enthalpy of bond dissociation of deuterium is higher `(443.35 " kJ mol"^(-1))` than hydrogen `(435.88" kJ mol"^(-1))`.

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