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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078-079_Molybdenum_Technetium.indd 78 02/12/16 6:52 pm