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Noble_gas
See also: Noble gas compound

The noble gases are a group of elements that are all gases. These elements are all in group 18 of the periodic table. All of them are monoatomic, meaning each molecule is a single atom. They almost never react with other elements. This is because they have a full 8 electrons outer electron shell. There are six noble gases:

All of these gases are found in air. They make up around 0.96% of the atmosphere. Noble gas compounds can be formed from noble gases. view more...









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