Question
What is the basic difference between the atom and molecule of a diamagnetic and a paramagnetic material? Why are elements with even atomic number more likely to be diamagnetic?
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Answer
Atoms/ molecules of a diamagnetic substance contain even number of electrons and these electrons from the pairs of opposite spin; while the atoms/ molecules of a paramagnetic substance have excess of electrons spinning in the same direction. The elements with even atomic number Z has even number of electrons in its atoms/ molecules, so they are more likely to form electrons pairs of opposite spin and hence more likely to be diamagnetic.
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