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Po, chemical symbol
(Encyclopedia)Po, symbol for the element polonium. ...Ra, chemical symbol
(Encyclopedia)Ra, symbol for the element radium. ...Re, chemical symbol
(Encyclopedia)Re, symbol for the element rhenium. ...No, chemical symbol
(Encyclopedia)No, symbol for the element nobelium. ...Og, chemical symbol
(Encyclopedia)Og, symbol for the element oganesson. ...Tb, chemical symbol
(Encyclopedia)Tb, symbol for the element terbium. ...Cd, chemical symbol
(Encyclopedia)Cd, symbol for the element cadmium. ...Copper Age
(Encyclopedia)Copper Age: see Bronze Age.copper pyrites
(Encyclopedia)copper pyrites: see chalcopyrite. ...copper sulfate
(Encyclopedia)copper sulfate, common name for the blue crystalline heptahydrate of cupric sulfate, in which copper has valence +2. It may also refer to cuprous sulfate (Cu2SO4), in which copper has valence +1. ...Browse by Subject
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