Question

Knowing the properties of $H_{2}O$ and $D_{2}O$, do you think that $D_{2}O$ can be used for drinking purposes?

Answer 1

${ D }_{ 2 }{ O}$  is the chemical formula for heavy water  and it is called deuterium oxide. ${ H }_{ 2 }{ O}$ is the chemical formula for ordinary water.

Heavy water has its dielectric constant lower than that of ordinary water. This makes ionic compounds less soluble in heavy water. Hence heavy water when consumed, reduces the rate of reactions occurring in human beings, plants and animals and eventually produces harmful effects.

Thus, heavy water cannot be used for drinking purposes.