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bridget wollslairon 5 March 2012
Transcript of Noble Gases
colorless, odorless, insipid and non-toxic gas
second-lightest noble gas, its color is reddish-orange
colorless and odorless in both its liquid and gaseous forms. It is not found in any compounds.
colorless, odorless, fairly expensive gas. Solid krypton is a white crystalline substance with a face-centered cubic structure which is common to all the "rare gases".
Colorless, odorless, tasteless noble gas.
Colorless, odorless, tasteless radioactive noble gas Helium helps NASA’s shuttle get into space. Helium is important to anyone who needs an MRI scan to help diagnose their illness or injury Cooling medium for nuclear reactors; helium won't become radioactive
Helium is used to fill up all kinds of ballons and Blimps. Neon is used in lightning arrestors, television tubes, high-voltage indicators, and wave meter tubes. Liquid neon is used as a cryogenic refrigerant, as it has over 40 times the refrigerating capacity per unit volume than liquid helium and over three times that of liquid hydrogen.
Argon is used in electrical light bulbs, fluorescent tubes, photo tubes, and glow tubes at a pressure of about 3 mm.
Argon is used as a motionless gas shield for arc welding and cutting.
Argon can serve as a blanket for the production of titanium and other reactive elements.
Argon provides a prospective atmosphere for growing silicon and germanium crystals
•Krypton is used in the production and usage of the krypton fluoride laser •Krypton based bulbs are used in some photography applications •It is mixed with argon to fill fluorescent lamps •An isotope of krypton is used in medical scans (MRI scan) of the airways.
•Used in making electron tubes, stroboscopic lamps, bactericidal lamps, and lamps used to excite ruby lasers for generating coherent light •Used in the atomic energy field in bubble chambers,probes, and other applications where its high molecular weight is of value
•Potentially useful as a gas for ion engines
•The perxenates are used in analytical chemistry as oxidizing agents
•occasional therapeutic use
•radiation therapy in hospitals
Similarites and Differences from other groups in the periodic table Similarities Differences Noble gasses are different from other elements because they are stable (have either 8 or 0 valence electrons) and do not share, give, or take electrons (do not create bonds with other elements. And, they do not form compounds. They are similar because the eletronegatevety of an element decreases as you go down a group. and the atomic radi increases. Similarities and Differences among the properties of the elements in the family. Similarities Differences Extremely limited chemical reactivity; low condensation temperatures compared with other gases of the same molecular weight; and very nearly ideal gas behavior at normal temperature and pressure. The electronegitevety of the elements decrease as you go down a group and the atomic radi increases.