Antimony

Chemical, physical and material properties and data of the chemical element Antimony.

Contents

General Information about Antimony

Regular nameAntimonyChemical symbolSbOther namesHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership

Atomar Properties of Antimony

Atomic number Z51 = number of protonsStandard Atomic Weight121.760 (1)

Electron configuration of Antimony

1s	2s	2p	3s	3p	3d	4s	4p	4d	4f	5s	5p	5d	5f	6s	6p	6d	6f	7s	7p
2	2	6	2	6	10	2	6	10		2	3

Shorthand electron configuration of Antimony: [Kr] 4d¹⁰ 5s² 5p³ .

Ionization Energies of Antimony

The following table lists the ionization energies IE (ionization potentials); the IE is the energy required in electron volt (eV) per atom to separate a given electron from an Antimony atom.

IE1	IE2	IE3	IE4	IE5	IE6
8.60839	16.63	25.3	44.2	56	108

Isotopic Data of Antimony

An overview of the nuclides as well as the isotopic data and properties are listed on the following page: Antimony isotopes.

Chemistry of Antimony

Oxidation states+5. +3Electronegativity1.9 (Pauling original)
2.05 (Pauling)
1.984 (Allen)
2.0 (Mulliken)
2.19 (Sanderson)
1.82 (Allred-Rochow)
5.0203 eV (Gosh Gupta)
4.85 eV (Pearson)Electron affinity1.047 401(19) eV
101.059(2) kJ mol^-1

Standard Electrode Potential

E⁰ (V)	Symbol	N_ox	Name Ox. Name Red.	Ox. Red.	e^-
0.2	Sb	+ III 0	Antimonyl cation Antimony	SbO⁺ + 2 H⁺ ⇄ Sb (s) + H₂O	+ 3 e^-

Material and Physical Properties

Melting point630.63 °CEnthalpy of fusion (molar)19.79 kJ mol^-1Enthalpy of fusion (specific)163 kJ mol^-1Boiling point1635 °CEnthalpy of vaporization67.91 kJ mol^-1Density6.697 g cm^-3

External Data, Identifiers

CAS registry number7440-36-0InChI =1S/SbInChIKeyWATWJIUSRGPENY-UHFFFAOYSA-NPubChem ID5354495

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Last update: 2022-12-12

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