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PhosphorusA Brief History of the Development of Periodic Table Hennig Brand discovers the first element, Phospherous.
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History of Chemistry
Charles Coulomb discovered that when two particals that are seperated, their forces are directly proportional to the product of both of the charges. -
History of Chemistry Atomic Theory, which says that matter is made up of atoms that are small and invisible, is published by John Dalton.
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Dalton's Atomic TheoryDeveloping The Atomic Theory of Matter
Dalton's idea of an atom was tiny, invisible, and indestructible -
The Background of the Development of Periodic Table The first periodic table was published in 1862 by French geologist A.E. Beguyer de Chancourtois.
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A Brief History of the Development of Periodic Table Founded by Lord Rayleigh, the first discovered noble gas was argon. It did not fit any known periodic group.
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Joseph John ThomsonChapter I - ATOM
British physicist, Thomson discovered a new part of the atom, known as electrons. -
Rutherford's Planetary Model of the AtomAtom Model
Rutherford theorized that the mass of the atom was concentrated in the nucleus, and the alpha, or positive, particals could be deflected backwards. -
The Refined Bohr Model
Appling quatum theory to Rutherford's atomic structure, Bohr assumed electrons travel in stationary orbits that are defined by angular momentum,
