sp2- HYBRIDIZATION
 
 
 
 sp2- HYBRIDIZATION
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The process of hybridization in which one s-orbital and two p-orbital overlap to produce three hybrid orbitals is known as sp3- HYBRIDIZATION or TRIGONAL HYBRIDIZATION. These orbital are coplanar and directed towards the corners of an equilateral triangle at an angle of 120o from each other. The fourth un hybrid Pz-orbital lies at right angle to the plane of Sp2-orbitals.

 
sp2- HYBRIDIZATION AND ETHENE MOLECULE
 

Molecular formula of ethene is C2H4. In ethene, each carbon atom is Sp2-hybridized. In this way six Sp2-orbitals are generated (three for each carbon atom). One Sp2-orbital of each carbon atom by overlapping forms a sigma bond between carbon atoms. Remaining two Sp2-orbital of each atom overlap with 1s-orbital of hydrogen atom to produce four sigma bonds. Pz un-hybrid orbital of each carbon atom by the parallel overlapping form a pi-bond between two carbon atoms. Geometry ethene molecule is trigonal in which bond angles are120o.

 
 
 
sp- HYBRIDIZATION
 
  The process of hybridization in which one s-orbital and one p-orbital overlap to produce two hybrid orbital is known as Sp- HYBRIDIZATION. This type of hybridization is also called diagonal hybridization. These orbital are at an angle of 180o. Remaining Py and Pz un hybrid orbitals lie perpendicular to the plane of sp-orbital.
 
sp- HYBRIDIZATION AND ETHYNE (ACETYLENE)
 
  Molecular formula of ethyne is C2H2. In ethyne, each carbon atom is sp-hybridized. In this way, four sp-orbital are generated. One sp-orbital of each carbon atom by overlapping forms a sigma bond between carbon atoms. Remaining one sp-orbital of each carbon atom overlap with 1s-orbital of hydrogen atom to produce two sigma bonds. Py-orbital of each carbon and Pz-orbital of each carbon by parallel overlapping form two pi-bonds between two carbon atoms. Geometry of ethyne molecule is linear in which bond angles are 180o.
 

 
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