Rupert,+Kathleen


 * Kr-krypton
 * Boiling point-119.93
 * Melting point-115.79
 * Gravity/density-3.75
 * Protons, electrons & neutrons-36,36 and 48
 * Atomic mass-83.798
 * Atomic number- 36
 * Electron configuration- 1s2 2s2p6 3s2p6d10 4s2p6
 * Valence electrons-4s2p6
 * How, who & when- Greek kryptos ,Sir William Ramsey,1898
 * How and when produced, processed -London England and by the Greeks
 * Chemical and physical properties- electro negativity, heat of fusion, boiling point, and conducctivity
 * Minerals ,compounds, or ores in which found- mxhy, compounds
 * Two common chemical reactions -heat of fusion, conductivity
 * Industrial or commercial uses-rare gases
 * Cost or value- $113.56 per gallon
 * Diagram of bohr model-
 * Pictures of element in pure state-
 * [[image:http://www.chemicool.com/elements/images/krypton-ion-laser.jpg width="360" caption="Krypton Ion Laser"]][[image:http://www.chemicool.com/elements/images/krypton-light.jpg width="360" caption="Krypton"]]
 * Unusual facts- Krypton played an important role in science from 1960-1983, when the length of the meter was defined as 1,650,763.73 times the wavelength of the orange-red light emitted by krypton-36. The meter was later defined in terms of the speed of light in a vacuum, but krypton continues to be used in scientific research.
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