Antimony

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Animated Antimony

History

From the Greek word anti plus monos - "a metal not found alone". Antimony was recognized in compounds by the ancients and was known as a metal at the beginning of the 17th century and possibly much earlier.

Sources

Antimony is not abundant, but is found in over 100 mineral species. It is sometimes found natively, but more frequently it is found as the sulfide stibnite.

Uses

Antimony is finding use in semiconductor technology for making infrared detectors, diodes and Hall-effect devices. It greatly increases the hardness and mechanical strength of lead. Batteries, antifriction alloys, type metal, small arms and tracer bullets, cable sheathing, and minor products use about half the metal produced. Compounds taking up the other half are oxides, sulfides, sodium antimonate, and antimony trichloride. These are used in manufacturing flame-proofing compounds, paints ceramic enamels, glass, and pottery.

General Info

AtomicNumber
51
Symbol
Sb
Name
Antimony

Atomic Info

Appearance
AtomicWeight
121.760(1)
Color
9E63B5
ElectronicConfiguration
[Kr] 4d10 5s2 5p3
ElectronegativityInPauling
2.05
AtomicRadiusInPM
138
IonRadiusInPM
76 (+3)
VanDerWaalsRadiusInPM
IEinKJmol
834
EAinKJmol
-103
OxidationStates
-3, 3, 5
StandardState
solid
BondingType
metallic
MeltingPoint
904
BoilingPoint
1860
Density
6.7
State
Metalloid
DiscoveredYear
Ancient