Question

In double decomposition reaction mutual ________ (ions/atoms) are exchanged.

Answer 1

Double displacement reaction may be defined as the chemical reaction in which one component of each of both the reacting molecules is exchanged to form the products ( $AB+CD\to AD+CB$ ).

During this reaction, the cations and anions of two different compounds switch places, forming two entirely different compounds.

$\therefore$ In double displacement reaction, mutual ions are exchanged.