A Visual Encyclopedia of the Periodic Table

78

Transition Metals

Molybdenum

Mo

42

Forms

Uses

Molybdenum gets its unusual name

from the Greek word molybdos, which

means “lead”. Miners once mistook

molybdenite, a dark mineral containing this

metal, for an ore of lead. This element is much

harder than lead, so it is easy to distinguish

between these two elements when they are pure.

Molybdenite is soft and slippery, and it is the

main molybdenum ore. Pure molybdenum

is mainly used to make alloys that are resistant

to corrosion. These are lightweight so are

ideal for constructing bike frames, but

This lightweight

but stiff frame

is made from a

steel containing

molybdenum

and chromium.

These closely fitting parts

are hard so they do not get

damaged easily.

This metal’s pure form is

silver-grey and has a very high

melting point: 2,623°C (4,753ºF).

This mineral feels

greasy to the touch.

This slipper y lubricant, which

contains finely powdered molybdenite

mixed with oil, protects fast-moving

mechanical parts in engines.

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