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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

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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