Cn, 鎶, Copernicium, 112, [285], 12, 7. Co, 鈷, Cobalt, 27, 58.933195(5), 9, 4. Cr, 鉻, Chromium, 24, 51.9961(6), 6, 4. Cs, 銫, Caesium (Cesium) ...
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