(D) The statement in option $(D)$ is incorrect. Heavy water $(D_2O)$ is a stable compound and is not radioactive or unstable. Hydrogen exists as a dia

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Heavy water is unstable because hydrogen is substituted by its isotope deuterium

(D) The statement in option $(D)$ is incorrect. Heavy water $(D_2O)$ is a stable compound and is not radioactive or unstable. Hydrogen exists as a diatomic molecule $(H_2)$,can form both $H^+$ and $H^-$ ions,and the common isotope of hydrogen $(^1H)$ is the only nucleus known to contain no neutrons.

Class 11 Chemistry Hydrogen Hydrogen

Medium

Which of the following statements is not correct for hydrogen?

A
Its molecule is diatomic
B
It exists both as $H^{+}$ and $H^{-}$ in different chemical compounds
C
It is the only species which has no neutrons in the nucleus
D
Heavy water is unstable because hydrogen is substituted by its isotope deuterium