Why does the hybridization occurs?

Question

why there occurs formation of hybrid orbitals? is it a natural phenomenon or an induced one? means r v makin hybrid orbitals or the molecule itself ? what is the answer? plz tell me, next week i m havin my organic test.

Answer 1

Actually an atom probably does not "hybridize" its orbitals. Hybridization is required to make the accepted spdf model which does not have tetrahedral oriented orbitals rearranged to allow even the simplest 3-D bonding to be accomplished. The electrons of atoms do move to provide the lowest energy state for the molecule. The MCAS model does not require "hybridization" as it is based on a tetrahedral base orbital instead of the spherical one currently in vogue. That dz2 orbital in the current model is a real "looker". A bit degenerate, if you check.

Answer 2

Hybridization and valence bond theory is way to explain the molecular geometry of molecules that occurs naturally.

Unfortunately, chemistry teachers often make hybridization occur in a stepwise sequence ...

"First an electron changes orbitals, and then it hybridizes."

But this isn't what happens.  A molecule assumes a particular geometry based on the number of bonding pairs of electrons and lone pairs.  We then assign a particular hybridization in order to explain the observed geometry.  The beauty of the valance bond theory is that it all works.

Answer 3

http://answers.yahoo.com/question/index?...

http://www.chem.tamu.edu/rgroup/romo/Che...

http://en.wikipedia.org/wiki/Hybridisati...