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Option 4 : Argon

  • Please note we have asked for a Noble gas and not the overall composition.
  • With about 0.935%, Argon is the most abundantly found noble gas and the third most abundant gas found in the Earth's atmosphere.
  • Comprising 0.00015% of the Earth's crust, Argon is also the most abundantly found noble gas in the Earth's crust.
  • Argon has an atomic number of 18 and comes under group 18 of the periodic table.
  • Nobel gases are odourless and colourless gases that have very low reactivity on account of their completely full valence shells.
     
Noble Gas Atomic Number
Helium 2
Neon 10
Xenon 54


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