0One of the most important concept of Chemistry is Electronegativity.
Concept of Electronegativity is useful from basic level questions to high level (IITJEE or NEET).
So let us understand what is Electronegativity.
It is defined as tendency of an atom to gain Electron.
That means if an element is more electronegative than other element then it will able to gain paired electron.
eg: In CH3-Cl if bond fission takes place then electron will go towards Cl hence after bond fission negative charge will come on Cl and positive charge will come on CH3.
i.e. CH3-Cl ==> CH3+ & Cl-
For solving question of IITJEE or NEET from this topic you need to memorise Electronegativity order given below
Order of Electronegativity:
F>O>N>Cl>Br>I>C>H>Metals.
Thankyou.
