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WebMay 3, 1999 · copper (Cu), chemical element, a reddish, extremely ductile metal of Group 11 (Ib) of the periodic table that is an unusually good conductor of electricity and heat. Copper is found in the free metallic state in nature. This native copper was first used (c. … Copper was the first metal that humans used to make tools. The chemical … hemoglobin, also spelled haemoglobin, iron-containing protein in the blood of … Native Americans made copper beads and tools long before Europeans came. … Weba. copper b. platinum c. calcium d. manganese e. iron f. barium g. lead h. strontium a. Cu b. Pt c. Ca d. Mn (Don't confuse for Mg with is magnesium) e. Fe f. Ba g. Pb h. Sr 4.2 Write the symbols for the following elements: a. oxygen b. lithium c. hydrogen d. chromium e. uranium f. tin g. titanium h. gold a. O b. Li c. H d. Cr e. U f. Sn g. Ti h. magnolia usf
Valency Chart (Valency Table of Chemical Elements) - Periodic …
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