Angular

tetrahedral

Triangular Planar

None

sp2

sp3

sp

sp3d3

valence shell electron proton repulsion theory

valency shell electron pair repulsion theory

valence shell electron pair repulsion theory

valence solenoid electron pair repulsion theory

1>2>3

2>1>3

3>2>1

3>1>2

8

10

13

12

side wise overlapping of hybridized p- orbital

head on overlapping of unhybridized p-orbital

lateral overlapping of unhybridized p-orbital

head on overlapping of unhybridized p-orbital

by overlapping of molecular orbitals

by overlapping of atoms with equal energy

by overlapping of atomic orbitals

by simple method of exchange of electrons

Tetrahedral

Linear

Triangular Planar

Angular

s-s type

s-p type

p-p type

none

107.5^o and triangular planar

104.5^o and tetrahedral

107.5^o and tetrahedral

109.5^o and tetrahedral

2 and 105.4^o

1 and 104.5^o

3 and 107.5^o

2 and 104.5^o

sp and linear geometry

sp2 and triangular planar geometry

sp3 and linear geometry

sp with tetrahedral geometry

Due to repulsion between electron pairs

Due to electro-negativity difference between central atom and surrounding atom ?

Due to different hybridization state of central atom in the respective molecule

Due to different extent of overlapping between atomic orbitals

33.33 %

25 %

75 %

50 %