Chemical Bonding - Covalent Non-Metals: Covalent Bond Strength

Question 1

bond length

Answer 1

• the distance between the two bonded nuclei at maximum attraction
• atom sizes
• number of bonds

Question 2

bond length - atom size

Answer 2

• consider flourine, chlorine, bromine, and iodine

- all has single bonds

Question 3

bond dissociation energy

Answer 3

• one measure of the strength of a chemical bond. It can be defined as the standard enthalpy change when a bond is cleaved by homolysis, with reactants and products of the homolysis reaction at 0 K (absolute zero).
• more energy for larger bond to break