In the reactivity series, metals are generally more reactive than non. Metals have a tendency to lose electrons and hence they supply electrons,. They do not provide free electrons in an acidic medium to release hydrogen.
So they do not displace hydrogen from the. Hydrogen from dilute acids can only be replaced if electrons are supplied to h + ions of the acid. This means that their atoms can take.
During the process of extraction, ores of sulphide and carbonate are converted into oxides. When a metal reacts with an acid, it can displace hydrogen to form a salt and release hydrogen gas. This means that their atoms can take up electrons and cannot lose them.