Clil Module Periodic Table Of The Elements Worksheet - Prof.ssa Elena Tibaldi - Istituto Sant''Anna - 2012-2013 Page 35
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48GROUP 8 ELEMENTS: THE NOBLE GASES
Noble gases are unreactive because they have a full outer shell and the atoms do not
need to gain or lose electrons to become stable.
Noble gas atoms can exist as single atoms and are monoatomic.
They have very low melting and boiling points.
Neon (Ne)
• used in lights and
signs for advertisement
Helium (He)
• in baloons
• less dense than air
Argon (Ar)
• inert gas
• used in light bulbs
• in small percentage
in the Earth’s
atmosphere
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