Covalent Bonding Electron Sharing can be EQUAL or UNEQUAL

Covalent Bonding Electron Sharing can be EQUAL or UNEQUAL

Polar Covalent Bonds UNEQUAL sharing of electrons EN value 0.5 – 1.5 Ex: C and O C 2.5; O 3.5 difference 1.0

Non-Polar Covalent Bonds EQUAL sharing of electrons EN value 0 – 0.5 Ex: C and H C 2.5; H 2.1 difference 0.4

VSEPR Symmetry (Valence-shell electron pair repulsion) Tells the shape of the molecule

Linear 1 bond Examples: F2 F–F HCl H – Cl CO2 O C O

Linear 1 bond

Bent 2 bonds H Examples: O H2O H SO2 S O O

Bent 2 bonds

Trigonal Planar 3 bonds H Examples: NH3 N H H O CH2O C H H

Trigonal Planar 3 bonds

Tetrahedral 4 bonds H Examples: CH4 H C H H CCl4 C l C C l C l C l

Tetrahedral 4 bonds