Question

Which of the following terms 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

Answer 1

Answer: (D)

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

Answer 2

Heavy water is not unstable.