From amongst the metals sodium,calcium,aluminium,copper and magnesium,name the metal:
$(i)$ which reacts with water only on boiling,and
$(ii)$ another which does not react even with steam.

(B) $(i)$ Magnesium $(Mg)$ reacts with hot water or steam only when it is in a heated state or boiling,as it forms magnesium hydroxide and hydrogen gas.
$(ii)$ Copper $(Cu)$ is a less reactive metal (placed below hydrogen in the reactivity series) and does not react with water or steam at all.