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Different metals require different states of water to liberate dihydrogen based on their position inHydrogen Chemistry Question

Question

Different metals require different states of water to liberate dihydrogen based on their position in the reactivity series. Match the metal correctly with the minimum thermal state of water required to liberate $H_2$:

Answer: B

💡 Solution & Explanation

Highly reactive alkali metals like $Na$ react violently with cold water. Moderately reactive metals like $Mg$ require hot or boiling water. Transition metals like $Fe$ only react reversibly with superheated steam at high temperatures.

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