Difference between Ionic Bonds and Covalent Bonds

By: Prof. Dr. Fazal Rehman Shamil | Last updated: February 3, 2024

 

Let me share with you a difference between Ionic Bonds and Covalent Bonds.

AspectIonic BondsCovalent Bonds
IntroductionA bond formed by the transfer of electrons from one atom to another.A bond formed by the sharing of electrons between atoms.
Type of atomsTypically involves a metal and a non-metal.Typically involves two non-metals.
Electron transferElectrons are transferred from the metal to the non-metal.Electrons are shared between the atoms.
Electronegativity differenceLarge electronegativity difference between atoms (usually > 1.7).Small or no electronegativity difference
Bond polarityResults in a polar bond due to the unequal sharing of electrons.Can be polar or nonpolar, depending on the electronegativity of the atoms involved.
Physical stateOften found in the solid state at room temperature.Can be found in various states (solid, liquid, gas) at room temperature.
Melting and boiling pointsHigh melting and boiling points.Lower melting and boiling points
Solubility in waterTypically soluble in water.Some are soluble, while others are not.
ConductivityConducts electricity when molten or dissolved in water.Does not conduct electricity
StructureForms a crystal lattice structure in the solid state.Forms discrete molecules or networks in the solid state.
Melting and boiling behaviorOften exhibits a sharp melting point and boiling point.May have a range of melting and boiling points.
Examples

 

·        NaCl

·        MgO

 

·        H₂O

·        CH₄

·        O₂