Noble gas

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Group 18
Period
1 2
He
2 10
Ne
3 18
Ar
4 36
Kr
5 54
Xe
6 86
Rn
7 118
Uuo

Noble Gases are elements that are in a gaseous state at room temperature. A Noble Gas is a gas thats outer shell is full. For all of the Noble Gases their outer shells are filled with 8 electrons except for Helium which has only 2 in the first shell. The Noble Gases were discovered in 1886. [1] Originally they were called inert gas because people thought that they were nonreactive, but that has since been proven wrong because Scientists have been able to create compounds with three of the Noble Gases (xenon, krypton, and radon). Noble Gases electron configurations are very stable and usually very resistant to any change.

Contents

The Six Noble Gases

  1. Helium Helium has an atomic number of 2, the Atomic symbol is He, and the atomic mass is 4.002602g/mol. The name helium comes from Helios which means sun in Greek. It was fist discovered by Sir William Ramsay in 1895.
  2. Neon Neon has an atomic number of 10, the Atomic Symbol Ne, and the atomic mass of 20.180g/mol. Its name comes from the greek word Neos which means new. It was discovered by Sir William Ramsay in 1898
  3. Argon Argon has an Atomic Number of 18, the Atomic Symbol Ar, and the Atomic Mass of 39.948g/mol. The name comes from the Greek word Argon which means inactive. It was discovered by Sir William Ramsay in 1894.
  4. Krypton Krypton has an Atomic Number of 36, the Atomic Symbol Kr, and the Atomic Mass of 83.80g/mol. Its name comes from the Greek word kryptos which means hidden. It was discovered in 1898 by Sir William Ramsay.
  5. Xenon Xenon has an Atomic Number of 54, the Atomic Symbol Xe, and the Atomic Mass of 131.290g/mol. The word Xenon comes from the Greek word xenon which means stranger it was discovered by Sir William Ramsay in 1898.
  6. Radon Radon has an Atomic Number of 86, the Atomic Symbol Rn, and the Atomic Mass of 222.018g/mol. The name comes from the word radium and it was discovered in 1898 by Fredrich Ernst Dorn.* [2]
Periodic table of elements with the Noble Gases illustrated with black border.
Periodic table of elements with the Noble Gases illustrated with black border.

Uses of Noble Gases

Even though Noble Gases usually do not combine with other elements they are used for a lot of differnt things. Have you ever seen the signs with neon lights that flash and say words on them? Those signs are made using neon and argon. Helium is used for ballons, blimps, and airships because it is lighter than air so they will float. Krypton is used for lighting, Xenon is used in powerful lamps and bubble chambers. Radon is used for the treatment of cancer. [3]

Electron Configurations

Discharge Tubes

Related References


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