Question

Give reason:

Metals displace Hydrogen from its acids, whereas non-metals do not.

Answer 1

The reason why non-metals do not displace hydrogen from dilute acids is that, unlike metals, non-metals do not have a tendency to lose electrons but to gain electrons. Metals have a tendency to lose electrons. These electrons, which are readily lost by reactive metals like sodium, potassium, etc. are accepted by hydrogen ions of the acids, reducing them to hydrogen gas.

However, non-metals do not lose electrons readily, because of which they do not displace hydrogen from acids. Another important point to note is that not all metals will displace hydrogen from acids. Only those metals which are more reactive than hydrogen will displace hydrogen from acids.