A metal less reactive and another metal more reactive than hydrogen are:
(a) Aluminium and lead
(b) Iron and magnesium
(c) Copper and tin
(d) Copper and mercury
Option (c) is the answer.
According to the option, the first metal that is copper is below hydrogen in the reactivity series. So, copper is less reactive than hydrogen. Tin is placed above hydrogen in the reactivity series so tin is more reactive than hydrogen.
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