Periodic table

 

 

Atomic number:51

Group numbers:15

Period:5

Electronic configuration:[Kr] 4d¹⁰ 5s² 5p³

Formal oxidation number:-3 +3 +5

Electronegativities:2.05

Atomic radius / pm:145

Relative atomic mass:121.760 ± 0.001

 

Antimony has been known since ancient times. The origin of the name comes from the Latin word stibium meaning mineral stibnite. It is a hard, brittle, silvery-white semimetal that is stable in dry air. It is toxic by ingestion or inhalation. Antimony is found in stibnite (Sb2S3) and in valentinite (Sb2O3). It is alloyed with other metals to increase their hardness. It is used in the manufacture of a few special types of semiconductor devices, also in plastics and chemicals. A few kinds of over-the-counter cold and flu remedies use antimony compounds.

PHYSICAL PROPERTIES

Density / g dm^-3:6691 (293 K)

 6483 (m.p.)

Molar volume / cm³mol^-1:18.20 (293 K)

 18.78 (m.p.)

Electrical resistivity / μΩcm:39 (20 °C)

THERMAL PROPERTIES

Thermal conductivity / W m^-1K^-1:24.3

Melting point / °C:630.63

Boiling point / °C:1587

Heat of fusion / kJ mol^-1:20.9

Heat of vaporization / kJ mol^-1:165.8

Heat of atomization / kJ mol^-1:262.04

IONIZATION ENERGIES

First ionization energy / kJ mol^-1:830.59

Second ionization energy / kJ mol^-1:1594.96

Third ionization energy / kJ mol^-1:2441.10

ABUNDANCE OF ELEMENTS

in the atmosphere / ppm:-

in the Earth's crust / ppm:0.2

in the oceans / ppm:0.0005

CRYSTALLOGRAPHIC DATA

ISOTOPES

REDUCTION POTENTIALS

 

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Citing this page:

Generalic, Eni. "Antimony." EniG. Periodic Table of the Elements. 3 Jan. 2012. KTF-Split. {Date of access}. <http://www.periodni.com/sb.html>.