'Element Rubidium\r'

' rakehell of name: from the Latin script â€Å"rubidius” heart and soul â€Å"dark vehement” or â€Å" enigmaticalest red”. atomic Number: 37 symbolism: Rb atomic encumbrance: 85. 4678 Say what? atomic number 37 is enounce as roo-BID-ee-em. Discovery: R. bunsen, G. Kirchoff 1861 (Germany), sight rubidium in the mineral petalite via its dark red spectral lines. Element Classification:  radical Metal Density (g/cc): 1. 532 dissolve Point (K): 312. 2 change state Point (K): 961 Appearance: soft, silvery-white, extremely reactive metal Atomic universal gas constant (pm): 248 Atomic rule book (cc/mol): 55. 9 Covalent Radius (pm): 216 Ionic Radius: 147 (+1e) proper(postnominal) Heat (@20°C J/g mol): 0. 360 optical fusion Heat (kJ/mol): 2. 0 evaporation Heat (kJ/mol): 75. 8 Pauling negativism Number: 0. 82 basic Ionizing Energy (kJ/mol): 402. 8 oxidization States: +1 Lattice anatomic al structure: Body-Centered Cubic Lattice invariable (A): 5. 590 CAS Registry Number: 7440-17-7 Properties: atomic number 37 may be runny at room temperature. It ignites impromptu in air and reacts violently in water, setting sunburn to the liberated hydrogen. Thus, rubidium mustiness be stored under teetotal mineral oil, in a vacuum, or in an lazy atmosphere. It is a soft, silvery-white metallic member of the alkali group. atomic number 37 forms amalgams with hectogram and alloys with gold, sodium, potassium, and cesium.Rubidium glows red-violet in a burst out test. Rubidium Trivia: • Rubidium melts just a miniscule above body temperature. • Rubidium was discovered using spectroscopy. When Bunsen and Kirchoff examined their sample of petalite, they found both red spectral lines deep into the red part of the spectrum. They named their bleak segment rubidium after(prenominal) the Latin word rubidus meaning ‘deepest red. • Rubid ium is the second well-nigh electropositive element. • Rubidium bottom be utilise to fork up fireworks a red-violet color. • Rubidium is the twenty-third most abundant element in the Earths crust. Rubidium chloride is use in biochemistry as a biomarker to track where potassium is taken up by maintenance organisms. • The hyper-fine electron structure of Rubidium-87 is employ in some atomic clocks to maintain accuracy. • The isotope Ru-87 was used by Eric Cornell, Wolfgang Ketterle, and Carl Wiemen to produce a Bose-Einstein condensate. This earned them the 2001 Nobel Prize in Physics. Reference: • http://chemistry. about. com/od/elementfacts/a/rubidium. htm • http://www. lenntech. com/periodic/elements/rb. htm • http://www. webelements. com/rubidium/ • http://education. jlab. org/itselemental/ele037. hypertext markup language [pic]\r\n'