The manganese steel plates were replaced with much lighter 25 mm (1.0 in) molybdenum steel plates allowing for higher speed, greater maneuverability, and better protection. Peter Jacob Hjelm successfully isolated molybdenum using carbon and linseed oil in 1781. The relative rarity of molybdenum(III), for example, contrasts with the pervasiveness of the chromium(III) compounds. [87] Pork, lamb, and beef liver each have approximately 1.5 parts per million of molybdenum. Allotropes Mo Molybdenum 42. [13] With one exception, Mo in proteins is bound by molybdopterin to give the molybdenum cofactor. In the case of molybdenum, the UL is 2000 μg/day. //-->\n [8][9] This is distinct from the fully oxidized Mo(VI) found complexed with molybdopterin in all other molybdenum-bearing enzymes, which perform a variety of crucial functions. ca. It is a parent radioisotope to the short-lived gamma-emitting daughter radioisotope technetium-99m, a nuclear isomer used in various imaging applications in medicine. [111] At levels of 5000 mg/m3, molybdenum is immediately dangerous to life and health. [96] The effective copper deficiency can be aggravated by excess sulfur. [21] The dark-blue phosphorus-containing heteropolymolybdate P[Mo12O40]3− is used for the spectroscopic detection of phosphorus. Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Molybdenum-100 has a half-life of about 1019 y and undergoes double beta decay into ruthenium-100.