Molybdenum

**Definition:** A metallic element with the atomic symbol Mo, atomic number 42, and atomic weight 95.95. It is an essential trace element, being a component of the enzymes xanthine oxidase, aldehyde oxidase, and nitrate reductase.

**Tree numbers:** - D01.268.556.555 - D01.268.956.500 - D01.552.544.555

**Synonyms:** - Molybdenum-98