Salts are composed of ions that form a tightly packed and ordered network, which is called a crystal lattice, and it is held together by IONIC BONDS.
Salts are made up of positively charged and negatively charged ions, which are called cations and anions respectively. Ionic bonds are bonds that are formed by ions, that is, cations and anions. The cations usually originate from metals while the cation originate from non metals.These charged particles are arranged in salts in such a way that they are tightly packed, thus giving crystalline forms to the salts.