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Noble gases

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Noble gases

  1. 1. Cayne McCaskell & Sean Getty
  2. 2.  Name given because they don’t interact with “common” elements. However, some have recently been discovered to interact with other elements Colorless, odorless, and tasteless Full valence electron shells (making forming compounds difficult) Very low boiling and melting points Have many different applications
  3. 3.  Comes from Greek helios meaning ‘the sun’ Emits purple-orange light Second lightest and second most abundant element in the universe. Lowest boiling and melting point of any element. Used in cryogenics, flight, and filling balloons. The speed of sound in helium is 3x of that in regular air, making your voice sound higher than normal when inhaled.
  4. 4.  Means ‘new’ in Greek Most intense light discharge of all noble gases. Emits bright red color Widely used in signs and lights. Once used to make television tubes.
  5. 5.  Comes from Greek argos meaning lazy, due to not reacting at all with other elements Emits blue-green light Third most common element in Earth’s atmosphere Used in arc welding, lighting, and scuba diving equipment
  6. 6.  Comes from Greek kryptos meaning ‘hidden’ Emits light orange-white color Length of a meter was once based on light emitted from excited Krypton atoms Used in many different lights and lasers Considered a non-toxic asphyxiant, large quantities will replace oxygen
  7. 7.  Means ‘stranger’ in Greek Emits a bright blue-lavender glow Used in plasma TVs, lasers, and as an anesthetic Speed of sound is lower, causing the opposite effect of helium Considered safe but still risky, as it has the potential to cause asphyxiation if too much is inhaled
  8. 8.  Named after radium, as it is radioactive Emits phosphorescent (glow in the dark) yellow only when cooled to extreme temperatures Heaviest of all noble gases and one of the heaviest gases at room temperature Once used for medical purposes, stopped when revealed it was radioactive Is a carcinogenic gas and considered a public health risk
  9. 9.  Helium- 1s2 Neon- [He] 2s2 2p6 Argon- [Ne] 3s2 3p6 Krypton- [Ar] 3d10 4s2 4p6 Xenon- [Kr] 4d10 5s2 5p6 Radon- [Xe] 4f14 5d10 6s2 6p6
  10. 10.  Wikipedia.org chemistry.about.com chem4kids.com encyclopedia.kids.net.au allinneon.com

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