Assertion: molybdenum | /r/HasProperty | first of the transition metals
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Source sentences:
text: Molybdenum is the first of the transition metals to have an extensive sulfur chemistry shown, for example, having as its principal ore molybdenum disulfide, MoS 2 , its binding by sulfur ligands in molybdenum containing enzymes, application of MoS 2 as an important industrial catalyst, and formation of many sulfur complexes some of which are used as soluble lubricating oil additives.