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Atomic Symbol - Sb
Atomic weight - 121.75
Atomic number - 51
Electron configuration - 2-8-18-18-5
Oxidation states - ±3, +5
State of matter - solid
Heavy metal-low melting
Discovered in ancient times
Boils at 1380 °C, melts at 630.5 °C
Notes:
Antimony exists in many allotropic forms such as a bright silvery
white metal which is hard and brittle. It is a poor conductor
of electricity and heat and doesn't tarnish in air unless the
air is moist in which case it slowly oxides. When antimony is
combined with other metals it is extremely useful. It shows a
rare characteristic of expanding when it solidifies and thus is
good for casting and type metals. Combined with either tin, lead,
or copper it forms antifriction alloys that are used in machinery
bearings.
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