Like all noble gases, xenon is colourless ... But Ramsey established their position between halogens and alkali metals, and was awarded the Nobel Prize in Chemistry in 1904 for these elemental ...
Group 7 - the halogens - Edexcel The group 7 elements ... Reactivity decreases down the group. Group 0 - the noble gases - Edexcel The group 0 elements, the noble gases, are all unreactive non ...
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