Bonds & ions
Ionic bond — আয়নিক বন্ধন
Quick answer
An ionic bond forms when a metal hands electrons to a nonmetal, and the opposite charges of the resulting ions pull the two together.
Definition
An ionic bond forms when a metal atom, which loses electrons easily, transfers one or more electrons to a nonmetal atom, which accepts them gladly. The metal becomes a positive ion (cation), the nonmetal a negative ion (anion), and their opposite charges pull them into a tidy crystal lattice. Ionic compounds are typically hard, high-melting solids, and they conduct electricity when molten or dissolved in water because their ions become free to move.
For example
In sodium chloride, sodium hands its lone outer electron to chlorine; the Na⁺ and Cl⁻ ions then stack into the cubic crystals of the salt in your kitchen.