Covalent Bond vs Metallic Bond
The chemical bonds are stable attractions between atoms, ions or molecules. The formation of chemical bond allows the formation of molecules or compounds. Chemical bonds are classified into different categories based on their formation and strength. Important types of chemical bonds recognized are Covalent bonds, Ionic bonds, Metallic bonds, Dipole-dipole interactions, London dispersion forces and Hydrogen bonds.
The present post discuss about the Similarities and Differences between the Covalent bond and Metallic bond with a Comparison Table.
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Covalent bond: A chemical bond formed by the sharing of electron pairs.
Metallic bond: Bonds occurs in metals, formed by the electrostatic attractive force between delocalized electrons and positively charged metal ions.
Similarities between Covalent Bond and Metallic Bond
Ø Both covalent and metallic bonds are strong bonds.
Ø Both are primary bonds.
Ø Both bonds result in the formation of complex structures.
Ø The formation of both covalent and metallic bond results in the formation of more stable compounds than the original.
Ø Compounds with covalent and metallic bonds are insoluble in polar solvents.
Difference between Covalent Bond and Metallic Bond
Covalent Bond Metallic Bond Formation Formed by the sharing of electron pair(s) between two atoms Formed by the electrostatic attraction between delocalized electrons and positively charged metal ions Image 
Examples Water, Oxygen molecule, Diamond, Silica Zinc, Copper, Aluminum The bond Consists of shared electrons between the atoms Consists of electrostatic attraction between electron and cations Shape Have definite shape No definite shape Solubility in nonpolar solvents Readily soluble Insoluble Conductivity Covalent bonds are poor conductors Metallic bonds are excellent conductors Physical state Compounds may be solid, liquid or gases Compounds usually in solid state Nature Compounds are usually soft and waxy Compounds are usually hard Malleability Very low or absent Very high malleability Boiling point Low boiling point High boiling point Melting point Low melting point High melting point