For differentiating b/w ionic n covalent compounds first u should know what is actually ionic & covalent bond. IONIC BOND:its is formed b/w highly electronegative &highly electro positive...
Covalent bonding is the bond within compounds that have a electronegativity difference of less than approx. 1.5 units, usually non-metal to non-metal...
examples being benzoic acid, sucrose... and...