Page 13 - Pharm.Org.Chem-I 02-06-05-101

Effect of hybridization on bond length and acidity

Bond type sp3 C sp2 C sp C
example
% S Character CH3-CH3 CH2=CH2 CH CH
33.3
25 50

Acidity Non Less Most
acidic acidic acidic
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Electronegativity

Is the ability of an atom to attract bonded

electrons closer to itself

H3C Cl
+
−

According to electronegativity:
F > O > N,Cl > Br > C,S > H
4.0 3.5 3.0 2.82 2.5 2.25

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