11:53 AM
Unknown
Introduction:
1) Kekule in 1865 proved that Valency of Carbon is 4 in mo0st of the compounds.
2)This concept was established according to the rules of electronic configuration set by Hund's Rule .
Illustration:
According to Hund's rule Tetra valency of Carbon is shown as :
Electronic configuration of carbon in ground state may be given as :
Electronic configuration of carbon in Excited state may be given as:
From the above electronic configuration it is obvious that due to promotion of the electron from 2s orbital to 2pz orbital unpaired electrons becomes 4 and carbon becomes Tetra- Valent .
3) Kekule also established chain structures and ring structures of many carbon compounds due to this phenomenon.
Posted in 
No Response to "Organic Chemistry: Tetra-Valency of Carbon"
Post a Comment