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ANTIMONY ( 51Sb121.75)

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Element Description

Metallic antimony, a bluish-white metal, is extremely brittle, flaky and crystalline. Though sometimes found in its pure state, antimony is more frequently found as the sulfide, stibnite (Sb<sub>2</sub>S<sub>3</sub>), or as antimonides of heavy metals and as oxides. It is a poor conductor of heat and electricity and has a hardness of 3-3.5 on th Mohs scale. Antimony is used in the manufacture of alloys and as a hardening agent for lead. In its purest form, antimony is used in semiconductor technology.

Property Name Property Value Property Name Property Value
Atomic Code ( 51Sb121.75) Atomic Volume 18.4W/D
CAS # 7440-36-0 First Ionization Energy 199K-cal/g-mole
Electronegativity 1.9Pauling's
Melting Point 630.7°C Covalent Radius 1.40Angstroms
Boiling Point 1587°C Mohs Hardness @ 20°C 3.25
Density 6.68g/cm3 Linear Coefficient of Expansion (0-1000°C) 8-11K-1
Themal Conductivity 0.045cal/cm2/cm/s/°C Electrical Resistivity @ 20°C 39.1µΩ-cm
Specific Heat @ 25°C 0.0494cal/g°C Crystal Structure Rhombohedral
Heat of Fusion 38.3cal/g Thermal Neutron Cross Section 5.7barns/atom
Heat of Vaporization 161cal/g Magnetic Susceptibility @ 18°C -99.0x10-6cgs


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