CHEM 1421 Chapter : Missing Chap 4 Pages
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This increases the magnetic field of the atom. Atoms with unpaired electrons are called paramagnetic . Paramagnetic atoms are attracted to a magnet. Paired electrons have no net magnetic field. Atoms with paired electrons are called diamagnetic. Diamagnetic atoms are repelled by a magnet. Brugmans (right) was the first individual to observe that bismuth and antimony were repelled by magnetic fields. However, the term diamagnetism was coined by michael faraday in. September 1845, when he realized that all materials in nature possessed some form of diamagnetic response to an applied magnetic field. Diamagnetism is a very general phenomenon, because all electrons, including the electrons of an atom, will always make a weak contribution to the material"s response. However, for materials that show some other form of magnetism (such as ferromagnetism or paramagnetism), the diamagnetism is completely overpowered. Substances that mostly display diamagnetic behaviour are termed diamagnetic materials, or diamagnets.
