Noun
(uncountable)
- (inorganic chemistry) Group 11 of the periodic table, comprising copper, silver, gold and roentgenium
copper-group
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"copper-group." YourDictionary, n.d. Web. 15 January 2019. <https://www.yourdictionary.com/copper-group>.
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copper-group. (n.d.). Retrieved January 15th, 2019, from https://www.yourdictionary.com/copper-group
