CHEM 222 Chapter Notes - Chapter 1-20: Aufbau Principle, Magnetic Quantum Number, Vsepr Theory

• School: University of Victoria
• Department: Chemistry
• Course: CHEM 222
• Professor: Hicks Robin

Document Summary

Electronic spectroscopy- is the study of transitions of electrons between energy levels. Electronic transition- the process of absorbing light energy to promote a electron from a lower energy level orbital to a higher energy orbital. Spin forbidden, d-d transition is one in which the number of unpaired electrons in the excited state is not equal to the number of ground state electrons. Spin allowed: d-d transition is one in which the number of unpaired electrons in the excited state is the same as the number in the ground state. Magnetic susceptibility: the response of a compound to an external magnetic field. Very weakly repelled by an external magnetic field diamagnetism. Paramagnetic: compounds with unpaired electrons that are attracted to external magnetic field. Effective magnetic moment: the extent to which a substance is attracted by a magnetic field. ( eff) Spin only effective magnetic moment: an approximation for metal complexes based on the number of unpaired electrons per metal.