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Atom - Wikipedia ... Atom
Chemistry - Wikipedia ... Chemistry
Chemical element
Atomic physics is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus. Atomic physics typically refers to the study of atomic structure and the interaction between atoms. [ 1 ] It is primarily concerned with the way in which electrons are arranged around the nucleus and the processes by which these ...
Chemical compound
Atomic, molecular, and optical physics
Atomic mass - Wikipedia ... Atomic mass
Molecule - Wikipedia ... Molecule