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  2. Electron - Wikipedia

    en.wikipedia.org/wiki/Electron

    The first video images of an electron's energy distribution were captured by a team at Lund University in Sweden, February 2008. The scientists used extremely short flashes of light, called attosecond pulses, which allowed an electron's motion to be observed for the first time. [171] [172]

  3. File:Periodic Table of Elements showing Electron Shells.svg

    en.wikipedia.org/wiki/File:Periodic_Table_of...

    == Summary == * '''Description:''' Diagram showing the periodic table of elements in the form of their electron shells. Each element is detailed with the name, symbol and number of electrons in each shell. The colour scheme is designed to match that used : 21:16, 1 April 2007: 4,213 × 2,980 (4.57 MB) GregRobson

  4. Electron shell - Wikipedia

    en.wikipedia.org/wiki/Electron_shell

    In chemistry and atomic physics, an electron shell may be thought of as an orbit that electrons follow around an atom's nucleus. The closest shell to the nucleus is called the "1 shell" (also called the "K shell"), followed by the "2 shell" (or "L shell"), then the "3 shell" (or "M shell"), and so on further and further from the nucleus.

  5. Wikipedia : Featured picture candidates/Electron shells

    en.wikipedia.org/wiki/Wikipedia:Featured_picture...

    Electron shells make up the electron configuration of an atom. It can be shown that the number of electrons that can reside in a shell is equal to 2 n 2 {\displaystyle 2n^{2}} . This image combines all the diagrams into one SVG image, at the nominator's request.

  6. Wikipedia : Picture peer review/Electron shells

    en.wikipedia.org/wiki/Wikipedia:Picture_peer...

    Electron shells make up the electron configuration of an atom. It can be shown that the number of electrons that can reside in a shell is equal to . This peer review is for a set of images, the entirety of which can be found here. While any one alone is obviously unworthy of featured status, together, the clarity that they demonstrate the ...

  7. Atomic orbital - Wikipedia

    en.wikipedia.org/wiki/Atomic_orbital

    In the quantum picture of Heisenberg, Schrödinger and others, the Bohr atom number n for each orbital became known as an n-sphere [citation needed] in a three-dimensional atom and was pictured as the most probable energy of the probability cloud of the electron's wave packet which surrounded the atom.

  8. US FDA proposes standardized testing to detect asbestos in ...

    www.aol.com/news/us-fda-proposes-standardized...

    In its proposed rule, the FDA would require manufacturers to test a sample of each batch of a talc-containing cosmetic product for asbestos by using methods such as polarized light and ...

  9. Periodic table - Wikipedia

    en.wikipedia.org/wiki/Periodic_table

    The overlaps get quite close at the point where the d-orbitals enter the picture, [50] and the order can shift slightly with atomic number [51] and atomic charge. [ 52 ] [ h ] Starting from the simplest atom, this lets us build up the periodic table one at a time in order of atomic number, by considering the cases of single atoms.