Why is deuterium oxide called “heavy water”?(1 point)

Question

Responses

It has extra hydrogen atoms.
It has extra hydrogen atoms.

Its oxygen atoms are heavier than others.
Its oxygen atoms are heavier than others.

Its hydrogen atoms are heavier than others.
Its hydrogen atoms are heavier than others.

It has extra oxygen atoms.

Answer 1

Deuterium oxide is called "heavy water" because its hydrogen atoms are heavier than ordinary hydrogen atoms. Therefore, the correct response is:

Its hydrogen atoms are heavier than others.