Single displacement reaction

A single-displacement reaction, also known as single replacement reaction or exchange reaction, is a type of chemical reaction in which one element or ligand is replaced by an atom or group. It can be represented generically as: A + BC ⟶ AC + B {\displaystyle {\ce {A + BC -> AC + B}}} where either A {\displaystyle {\ce {A}}} and B {\displaystyle {\ce {B}}} are different metals (or any element that forms cation like hydrogen) and C {\displaystyle {\ce {C}}} is an anion; or A {\displaystyle {\ce {A}}} and B {\displaystyle {\ce {B}}} are halogens and C {\displaystyle {\ce {C}}} is a cation.

Source: Wikipedia — Single displacement reaction (CC BY-SA 4.0)