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Element: molybdenum

Name : molybdenum

Symbol : Mo

Atomicnumber : 42

Relativeatomicmass : 95.95 (1) g [see note g]

Standardstate : solid at 298 K

Appearance : grey metallic

Classification : Metallic

Groupinperiodictable : 6

Groupname : (none)

Periodinperiodictable : 5

Blockinperiodictable : d

Shellstructure : 2.8.18.13.1

CASRegistry : 7439-98-7

Description : Molybdenum is a silvery-white, hard, transition metal. Scheele discovered it in 1778. It was often confused with graphite and lead ore.