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PERIODICITY IN PROPERTIES
On moving along the elements of the periodic table in the order of atomic number there is a regular gradation in the properties of the elements. This is due to the similar outer electronic configuration of these elements. Some of the few gradations in the properties […]

Physical chemistry
The branch of chemistry that deals with the science of the composition, structure, properties, and reactions of matter, especially of atomic and molecular systems and the composition, structure, properties, and reactions of a substance.