Question

please give right answer,,,
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Answer 1

Answer:

The metals which are placed above metals in the activity series can displace hydrogen from their respective solutions

metals above hydrogen are highly active metals

most active is pottasium

least active is silver

for example :zinc is placed above hydrogen in the activity series, it can displace hydrogen from its solution

but copper is placed below hydrogen so it cannot displace hydrogen

metals placed below hydrogen are less active metals so it cannot displace hydrogen from its solution

Explanation:

hope it helps

Answer 2

Explanation:

Metals displace hydrogen from acids because they are above hydrogen in the reactivity series, resulting in the formation of a salt and hydrogen gas. Reaction between magnesium and HCl is an example of this kind of displacement reaction. Mg + 2HCl → MgCl2 + H2.