MBB 222 Lecture Notes - Lecture 4: Van Der Waals Force, Bond-Dissociation Energy, Relative Permittivity
2 Apr 2016
School
Department
Course
Professor
Document Summary
Holds atoms together and lightest elements form the strongest bonds. Non-covalent interactions do not involve the sharing of electrons. Bond dissociation energy - the amount of energy required to break a chemical bond (kcal or kj/mol) Charge-charge, charge-dipole, dipole-dipole, charge induced dipole, dipole induced dipole. **bond energy is dependent on: charges of interacting species (q1 and q2, distance, r, between them. (or d): the ability of a solvent to interact with a solute and to decrease the: permanent dipole: Polar molecules with no net charge but with asymmetric distribution of charge (e. g. co, Non-polar molecules have a symmetric charge distribution that when placed in the vicinity of charged or polar molecules can be induced to polarize (eg. benzene near a charged species) Also known as london forces or dispersion forces. Molecules with neither a net charge nor permanent dipole moment can attract one another at close distance.
