Question

Boiling point is lower for hydrogen than that of deuterium.
If this is true enter 1, if false enter 0.

Answer 1

Boiling point of deuterium is higher than that of hydrogen.

The hydrogen bonds in deuterium oxide are slightly stronger than those in water. It, therefore, requires more energy to excite the bonding electrons from the ground level to the dissociation point and a higher boiling point is observed.