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GROUP 8: THE NOBLE GASES (ELEMENTS OF THE NOBEL GAS (HELIUM
Symbol: He
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GROUP 8: THE NOBLE GASES
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PROPERTIES
- they are unreactive or inert- they do not normally react with anything
- they are colourless gases, and occur naturally in air
- the density and boiling points increase down the group
- the Group 8 elements are all non-metals
- they exist as single atoms- they are monatomic
WHY ARE THEY UNREACTIVE?
- their atoms have a very stable arrangement of outer-shell electrons. They do not need to bond to other atoms to gain, or lose electrons.
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