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Organic Chemistry Tutorials

The shape of sp hybrid orbital - Why is the lobe unequal?

If you look at the shape of s and p orbitals before hybridization, you will notice that - 

  • The s orbital is spherical.

  • The p orbital is dumbbell-shaped, where the two lobes are proportionate along one axis.

However, when these orbitals of the same atom mix to form hybrid orbitals, the newly formed shape is that of teardrops pointing in opposite directions, with one lobe more prominent than the other.