The relative tendency of an atom to attract the shared electron pair towards it self.
what is electronegativity and electron affinity
Electron affinity and electronegativity both measures the power of atrracting electron but electron affinity is concerned with isolated gaseous atom and electronegativity is concerned with the atom.
concept of Electronegativity is introduced by pauling an arbitrary value of 4 has been assigned to flurine(Most electronegativity element)
Pauling's Electronegativity coefficients(for the most common oxidation state of the elements)
- Electronegativity increases on Moving from left to right in a period
- Electronegativity decreases on Moving from top to bottom in a group.
Ionic character is Electronegativity>1.7
Covalent character is Electronegativity<1.7
Q. find the order of covalent character of
AlCl3 and AlF3
solution:-
Covalent charater is inversely proportional to Electronegativity the difference of atom of the molecule.
so AlCl3 > AlF3
Q. find the order of covalent character of
LiCl BeCl2 BCl3 CCl4
solution:- CCl4 >BCl3>BeCl2 >LiCl
