what is electronigativity

what is Electronigativity

the tandancy of an atom to attract shaired e towards it self is called electronigativity,,,,,,2)- Electronigativity and Electron affinity both have tandancy to attract electron but electron affanity is for isolated atom where as Electronigativity is for bonded atom,,,,,,


SOME IMPORTENT TRICK HOW TO FIND ELECTRONIGATIVITY1) In a 2 period Li to F ,,,,
Li  E.N. is  1 than .5 add to F ,,,example Li E.N. 1 add .5 ,,, THAN Be E.N. is 1.5 so on 2)Na,,,,,,E.N. is .9 tahn .3 add to S so on ,,,,, example,,,Na E.N. is .9  add .3 than Mg E.N. is 1.2
3)Cl, Br , and I ,,, E.N.( electronegativity)    3.0,2.8,2.5 C=S=I=2.5 these atom elcrtonigativity are same H=2.1     N=Cl=3.0    P=H=2.1       Be=Al=1
Factor affecting  of E.N.

1) E.N. inversely proportion  to atomic size 2)E.N. directly proportion to zeff3)more percentage of s charector in hybridization is more E..N 

key point of E.N

E.N. does not depand on completaly feild or half feild orbital because it is tandancy to attract bonded electron not to gain electron from out side ,,,,,,2)in pereodic table down the g.p. EN.  is decreses and in peroid move to left to right E.N. is increses,,,,,,
3)exception- zero g.p. or inert gas E.N always zero4)In g.p. or 2B element (zn , ca ,Hg )value of E.N. is decreses down the g.p. becauese of lantahnide contrection ,,,,,,,,,,