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Grade: 12th pass
        
In sp3d3 which d orbitals are used??I am so confused as some books are saying that 

1.These are dxy,dxz,dyz due to similar energy.
2.But then some are saying that dx2-y2,dz2 and any other d due to their arrangement in pentagonal bypyramidal .
3. Again another book is saying that this is dxy,dxz and dz2 because if we use dx2-y2 then the angle which is 72 will convert to 90.

Now which book is right I am so confused??
one year ago

Answers : (2)

Arun
22545 Points
							
The sp3d3 hybridization has a pentagonal bipyramidal geometry i.e., five bonds in a plane, one bond above the plane and one below it.
 

So to achieve such geometry we need to choose orbitals in such a way such that five of them are in one plane and two in planes perpendicular to it

We have one s orbital – s    

three p orbitals – px py pz

and five d orbitals – dxy dyz dxz dx2-y2 dz2

The only possible combination in which 5 are in a plane and 2 above it is 

s pppdxy dx2-y2 dz2

in which s px py dxy dx2-y2 are in xy plane and pz and dz2 perpendicular to it.

So the d orbitals being used are dxy dx2-y2 dz2

one year ago
satwant kaur
27 Points
							
But then for sp3d3 axial bonds are shorter than equitorial if it is the case then in the axial bond there is no s character present so how the shorter bond length will be explained??
one year ago
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