Bond Parameters

Bond Parameters 

1. Bond length is defined as the equilibrium distance between the nuclei of two bonded atoms in a molecule.

2. The Covalent Radius is measured approximately as the radius of on atom's core which is in contact with the core an adjacent atom in a bonded situation.

3. The vander Walls Radius represents the overall size of atoms which included the valence shell in a non-bonded situation.

4. Bond Angle is defined as the angle between the orbitals containing bonding electron pairs around the central atom in a molecule/ion.

5. Bond Enthalpy is defined as the amount of energy required to break one mole of bonds of a particular type between two atoms in a gaseous state. For polyatomic molecules the term mean or average bond enthalpy is used.

6. Bond Order is given by the number of bonds between the two atoms in a molecule.

7. Isoelectronic molecules and ions have identical bond orders for example F₂ and O₂²- have bond order 1, N₂ CO and NO+ have bond order 3.

8. With increase in bond order, bond enthalpy increases and bond length decreases.