By: Jimmy Lai PHOSPHORUS Phosphorus Phosphorus was discovered by Hennig Brand Phosphorus was discovered 1669 in Germany. Origin of the word Phosphorus: Greek word "phosphoros" meaning "bringer of light“ Atomic Aspects Of Phosphorus Atomic Symbol For Phosphorus is P Atomic Name For P is Phosphorus Atomic Number For Phosphorus is 15 Atomic Mass For Phosphorus is 30.97376 amu Numbers Of Protons, is 15 Neutrons, is 16 and Electrons in the Neutral Atom is also 15. Physical Aspects Of Phosphorus Phosphorus is classified as nonmetal Phosphorus is a solid at room temperature. Phosphorus is in the Pnictogen group Pnictogen are members of the nitrogen family Phosphorus is in the period 3 Chemical Aspects Of Phosphorus Phosphorus has 3 isotopes Electric Configuration For Phosphorus P-31 Stable P-3214 28 days P-3324 3 days 1s2 2s2 2p6 3s2 3p3 Ionization energy is the energy required to remove an electron from a gaseous atom or ion. Phosphorus first ionization energy 1011.8 (eV) P 3- is the most common ion because it has 5 valance elections so its going to form ions in which 3 electrons are taken to fill the valance shell to 8 Electron negativity is a measure of the tendency of an atom to attract a bonding pair of electrons. 2.19 is the electron negativity of Phosphorus Interesting Facts About Phosphorus Hennig Brand discovered phosphorus in 1669, in Hamburg, Germany, preparing it from urine. (Urine naturally contains considerable quantities of dissolved phosphates.) White phosphorus is highly toxic. Skin contact can result in severe burns. Red phosphorus (provided it is not contaminated with white phosphorus) is considered non-toxic. Phosphorus is a vital plant nutrient Citation "Chemical Elements.com - Phosphorus (P)." Chemical Elements.com - Phosphorus (P). N.p., n.d. Web. 13 June 2013. http://www.chemicalelements.com/elements/p.html "The Element Phosphorus." It's Elemental -. N.p., n.d. Web. 13 June 2013. http://education.jlab.org/itselemental/ele015.html "Phosphorus Element Facts." Chemicool. N.p., n.d. Web. 13 June 2013. http://www.chemicool.com/elements/phosphorus.ht ml