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Arsenic @ Periodic Table of Chemical Elements

33

As

Arsenic

74.921602

2
8
18
5
Arsenic photo
PropertyValue
Atomic number33
Atomic weight74.921602 amu
Electronic configuration1s22s22p63s23p63d104s24p3
Stable and very long lived isotopes75As: 100%
Density 5.776 g/cm3 (STP)
Melting 817 °C
Boiling 613(subl.) °C
Covalent radius 1.19 Å
Van der Waals radius 1.85 Å
Ionic radius 0.58 Å
First ionization potential 9.815 eV
Electron affinity -0.808 eV
Sample compounds
As2O3
Cu3As
(NH4)3AsO4
AsH3
As4O10
As2O5
Periodict table
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