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Molybdenum is a chemical element with symbol Mo and atomic number 42. Molybdenum does not occur naturally as a free metal on Earth; it is found only in various oxidation states in minerals.25.6 g = 50 × 50 mm
M 3003 Molybdenum foil, 1.0 mm thick, 99.9% - used as a substrate for the fabrication of CdS-CdTe solar cells.