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Atoms , Atom
Ordinary physical and chemical matter is made of atoms. An atom is defined by its atomic number Z : A neutral atom has Z electrons, whose negati… Molecule , A molecule is a particle consisting of two or more atoms joined to each other by means of a covalent bond. (Electrons are shared in covalent bonds.)… Proton , Proton
The proton is a positively charged subatomic particle. Protons are one of the fundamental constituents of all atoms . Protons, in addition to… Dipole , Dipole
Dipole, literally, means "two poles," two electrical charges, one negative and one positive. Dipoles are common in atoms whenever electrons (-… Actinide Series , Actinides or actinoids is a generic term that refers to a series of 15 chemical elements. Denoted by the generic symbol An, these elements are all ra… Sir George Paget Thomson , Sir George Paget Thomson
Sir George Paget Thomson
The English atomic physicist Sir George Paget Thomson (born 1892) shared the Nobel Prize in physics…
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