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GCSE Combined Science · key term
An element in Group 0 of the periodic table whose atoms have a full outer electron shell and a stable electron arrangement.
Used by AQA and Edexcel
Specification 5.1.2.4 · Paper 3
Revise: Group 0 Noble GasesGroup 0, the column at the far right of the periodic table, contains the noble gases. These include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn), in that order down the group. They are non-metals and are colourless gases at room temperature.
Specification Group 1, Group 0 · Paper 3, Paper 4
An element in Group 0 whose atoms have a full outer electron shell and are very unreactive.
Revise: Group 1Chlorine, bromine and iodine are halogens, while helium, neon and argon are noble gases. Hydrogen is positioned above the Group 1 metals, but it is not an alkali metal.
An element in Group 0 of the periodic table. Noble gases have full outer electron shells and are very unreactive.
Explain inertness using a full, stable outer electron shell—not simply by saying that noble gases are in Group 0.
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