nonpolar covalent bond definition|polar bond definition|with examples

Polar and Non Polar Molecules

Hello friends  welcome to our blog, we have studied the Lewis concept which relates with the covalent bond .When a covalent bond formed within molecules. then a molecule have
two characteristics:-

A. Polar covalent Bond
B. Non-Polar Covalent Bond


Non-Polar Covalent Bond


The covalent bond is relates with the sharing of electrons if the atoms joined by the covalent bond are exactly same we called this bond as non polar covalent bond.This bond is formed when the two atoms of same electronegativity join together.

Electronegativity means(power to attract electrons)

For example:-(exactly same atoms)

these few molecules have no poles developed because the shared pair of electrons are exactly at center that is equal distance to both of them

Polar covalent Bond

On the other hand in case of different atoms covalent bond linked to each other then the shared pair of electrons are not equal distance to both of them because of different electronegativity
Important:-

an example when HCL molecule formed with the help of covalent bond chlorine is having great control over electron pairs as compared to hydrogen
Chlorine:- High Electronegativity
Hydrogen:- which is Low Electronegativity
so shared pair of electron will displace more towards chlorine atom. this result the two atoms acquire negative and partial positive charge having same magnitude.

How much magnitude

And how much magnitude of positive or negative charge between atoms is measured by dipole moment the molecule with the greater difference of electronegativity more will be the polarity of the bond


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