Periodic Table of Elements

Atomic Radius

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Atomic radius is a measure of the size of an atom, which is determined by the distance between its nucleus and outermost electron shells. The atomic radius can be calculated using various methods such as X-ray diffraction, crystallography, or spectroscopy. It has been found that atomic radius generally decreases across each period in the periodic … Read more

Atomic Mass

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Atomic Mass is an important concept in chemistry and physics. It refers to the amount of matter that is contained within a single atom or molecule. Atomic mass can be expressed in either gram per mole (g/mol) or atomic mass units (AMU). The unit of measure for atomic mass was originally established by chemist John … Read more