Elektronische Daten		Thermische Daten		Sterische Daten
Schalen: 2,8,18,5 Orbitale: [Ar] 3d10 4s2 4p3 Elektronegativität: 2.2, 2.0 1. Ionization potential: 9.8152 eV 2. Ionization potential: 18.633 eV 3. Ionization potential: 28.351 eV Oxidation states: 5,3,-3 Electrical conductivity: 0.0345 10^6		Melting point: 817 °C @ 28 atmos. Boiling point: 613 °C Sublimes at Specific heat: 0.33 J/gK Heat of fusion: -- kJ/mol Heat of vaporization: 34.760 kJ/mol Thermal conductivity: 0.500 W/cmK		Atomic radius: 1.33 Å Ionic radius: 0.58 Å () Covalent radius: 1.20 Å Atomic volume: 13.1 cm³/mol Density (293 K): 5.72 g/cm³ Crystal structure: Rhomboedrisch

Nuklid	Häufigkeit [%]	Masse	Spin	Halbwertszeit	Zerfallsmodus	Zerfallsreihe
71As	0	71	5/2	2.72d	EC,+	View
72As	0	72	2	26.0h	+,EC	View
73As	0	73	3/2	80.3d	EC	View
74As	0	73.924	2	17.78d	EC,+,-	View
75As	100	74.9216	3/2	--	stabil	--
76As	0	75.922	2	26.3h	-	View
77As	0	76.921	3/2	38.8h	-	View

Legende

Herkunft des Namen:	griechisch: arsenikon; Latein: arsenicum, (beides Namen fü gelbes Pigment)
Beschreibung:	Steel-gray, brittle semi-metal.
Entdeckt von:	Schon in der Antike bekannt
Jahr:	--
Ort:	Unbekannt
Quelle(n):	Found in mispickel (arsenopyrite).
Verwendung(en):	Many of its compounds are deadly poison and used as weed killer and rat poison. Conducts electricity. Used in semiconductors. Some compounds, called arsenides, are used in the manufacture of paints, wallpapers, and ceramics.