Noble Gas - GCSE Chemistry Definition
Reviewed by: Richard Boole
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Noble gases are elements in Group 0 (or Group 18) of the Periodic Table. They include helium, neon, argon, krypton, xenon, and radon. Noble gases are:
Colourless, odourless, and unreactive
Found as gases at room temperature
Chemically stable because they have full outer electron shells
They have full outer shells of electrons which means that they do not need to gain or lose electrons. Therefore, noble gases rarely react with other elements. They are used in everyday life, for example, neon in advertising signs and helium in balloons. In GCSE Chemistry, noble gases help explain trends in reactivity and the importance of electron arrangements in determining chemical behaviour.
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