Question

" more reactive element displace less reactive element" prove this statement

Answer 1

Displacement and reactivity. ... Theless reactive element is removed from the compound and replaced by themore reactive element. For example, if chlorine is added to a solution of potassium bromide, the bromine is replaced by the chlorine forming potassium chloride.

Answer 2

Displacement reaction: the reaction in which a more reactive metal displaces a less reactive metal from its salt solution.

Example:
CuSO4 + Zn -------------> ZnSO4 + Cu