- Created by: th13114
- Created on: 22-11-18 10:03
Polar and Non Polar Bonds
Covalent bonds can either be polar or non polar, if the atoms involved in a bond are differnet they will have differenet electronegativities. This causes and equal sharing of electrons and a polar bond. On the periodic table the electronegativity strength increases across a period and decrease down a group. If there is a lone pair present the molecule will always be polar. The polarity of a molecule depends on the polarity and arrangement of the bonds in the molecule. If the polar bonds are arranged symmetrically around the central atom, the bond dipoles cancel and the molecule is non polar.
Tetrahedral has 109 bond angle and 4 regions of negative charge and 4 bonding regions, trigonal planar has 120 bond angle, and 3 regions of negative charge and 3 bonding regions. Linear has 2 bonding regions and 2 regions of negative charge, it has…