What is the difference between sp, sp2, and sp3 hybridization?

Basis of differentiation

Sp hybridization

Sp2 hybridization

Sp3 hybridization

Definition

Is the hybridization between an s and p orbital

Is the hybridization between one s orbital and two p orbitals

Is the hybridization between one s orbital and 3 p orbitals

Percentage of s character

S characteristic is 50%

S characteristic is 33%

S characteristic is 25%

Percentage of p character

P characteristic is 50%

P characteristic is 66%

P characteristic is 75%

Geometry of orbital arrangement

Linear

Trigonal planar

Tetrahedral

Angle between orbitals 

180°

120° 

109.5°

Unhybridized p orbitals

Two unhybridized p orbitals

One unhybridized p orbital

Does not have any unhybridized p orbitals