Question

Deuterium is also called heavy hydrogen.

• A. True
• B. False

Answer 1

The correct option is A True

Isotopes of hydrogen:

1. Hydrogen contains one proton.
2. Hence, the mass of hydrogen is one unit.
3. Hydrogen has three isotopes: protium, deuterium, and tritium.
4. Deuterium contains one proton and one neutron.
5. Thus, the mass of deuterium is two.
6. Thus, its mass is twice of the hydrogen atom. Hence, it is called heavy hydrogen.

Hence, the statement is true.