$A$ compound $Z$ is formed by the transfer of electrons from a metal $X$ to a non-metal $Y$. Identify the type of bond formed in the compound. List three general properties of the compounds formed by such type of bonds.

(IONIC BOND) The bond formed by the transfer of electrons from a metal to a non-metal is an $Ionic$ bond.
The general properties of ionic compounds are:
$(i)$ They are usually crystalline solids due to strong electrostatic forces of attraction.
$(ii)$ They have high melting and boiling points.
$(iii)$ They are generally soluble in water but insoluble in organic solvents like kerosene or petrol.
$(iv)$ They conduct electricity in their molten state or in aqueous solution because the ions become free to move.