bohr model
61Blacklight Power — Inc. Industry Chemistry Founded HydroCatalysis Inc.[1] in 1991.[2] …
62Atomic radius — Diagram of a helium atom, showing the electron probability density as shades of gray. The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the nucleus to the boundary of the… …
63Walther Kossel — Walther Ludwig Julius Kossel (January 4, 1888 in Berlin, Germany ndash; 22 May, 1956 in Tübingen, Germany) was a German physicist known for his theory of the chemical bond (ionic bond/octet rule), Sommerfeld Kossel displacement law of atomic… …
64Superseded scientific theories — A superseded, or obsolete, scientific theory is a scientific theory that was once commonly accepted but that is no longer considered the most complete description of reality by a mainstream scientific consensus, or a theory which has been shown… …
65Atomic number — See also: List of elements by atomic number An explanation of the superscripts and subscripts seen in atomic number notation. In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the… …
66Electron shell — Periodic table with electron shells An electron shell may be thought of as an orbit followed by electrons around an atom s nucleus. The closest shell to the nucleus is called the 1 shell (also called K shell ), followed by the 2 shell (or L shell …
67Rydberg formula — The Rydberg formula is used in atomic physics to describe the wavelengths of spectral lines of many chemical elements. The formula was invented by the Swedish physicist Johannes Rydberg and presented on November 5, 1888.HistoryIn the 1880s,… …
68Franck-Hertz experiment — The Franck Hertz experiment was a physics experiment that provided support for the Bohr model of the atom, a precursor to quantum mechanics. In 1914, the German physicists James Franck and Gustav Ludwig Hertz sought to experimentally probe the… …
69Azimuthal quantum number — The azimuthal quantum number (or orbital angular momentum quantum number, second quantum number) symbolized as ℓ (lower case L) is a quantum number for an atomic orbital that determines its orbital angular momentum and describes the shape of the… …
70Electron cloud — is a term used, if not originally coined, by the Nobel Prize laureate and acclaimed educator Richard Feynman in The Feynman Lectures on Physics (Feynman2006 Vol 1 lect 6 pg 11) for discussing exactly what is an electron? . This intuitive model… …
