Plantilya:Infobox arsenic

Arsenic
	33As
	germanium ← arsenic → selenium
Panagway
	metallic grey;
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	arsenic, As, 33
Paglitok	/ˈɑːrsᵻnɪk/ [[Help:Pronunciation respelling key\|Plantilya:Smallcaps all-sə-nik]],; also /ɑːrˈsɛnɪk/ [[Help:Pronunciation respelling key\|ar-Plantilya:Smallcaps all-ik]] when attributive
Kategoriyang elemento	metalloid
Group, period, block	15, 4, p
Gibug-aton sa atomo	74.92160(2)
Kontorno sa elektron	[Ar] 4s2 3d10 4p3; 2, 8, 18, 5 Electron shells of arsenic (2, 8, 18, 5)
History
Pagkadiskobre	Early Bronze Age (2500 BC)
First isolation	Albertus Magnus (1250)
Physical properties
Phase	magahi
Density (near r.t.)	5.727 g·cm−3
Liquid density at m.p.	5.22 g·cm−3
Sublimation point	887 K, 615 °C, 1137 °F
Triple point	1090 K (817°C), 3628 kPa
Critical point	1673 K, ? MPa
Heat of fusion	(grey) 24.44 kJ·mol−1
Heat of vaporization	? 34.76 kJ·mol−1
Molar heat capacity	24.64 J·mol−1·K−1
Vapor pressure
Atomic properties
Oxidation states	5, 3, 2, 1, -3; (mildly acidic oxide)
Electronegativity	2.18 (Pauling scale)
Ionization energies; (more)	1st: 947.0 kJ·mol−1
	2nd: 1798 kJ·mol−1
	3rd: 2735 kJ·mol−1
Atomic radius	119 pm
Covalent radius	119±4 pm
Van der Waals radius	185 pm
Miscellanea
Crystal structure	simple trigonal
Magnetic ordering	diamagnetic
Electrical resistivity	(20 °C) 333 nΩ·m
Thermal conductivity	50.2 W·m−1·K−1
Young's modulus	8 GPa
Bulk modulus	22 GPa
Mohs hardness	3.5
Brinell hardness	1440 MPa
CAS registry number	7440-38-2
Most stable isotopes
	Main article: Isotopes of arsenic
β+	74Ge
γ	-
β−	74Se Plantilya:Infobox element/isotopes stable
	v; t; e; · r

Plantilya:Template reference list

↑ Gokcen, N. A (1989). "The As (arsenic) system". Bull. Alloy Phase Diagrams. 10: 11–22. doi:10.1007/BF02882166.
↑ Ellis, Bobby D. (2004). "Stabilized Arsenic(I) Iodide: A Ready Source of Arsenic Iodide Fragments and a Useful Reagent for the Generation of Clusters". Inorganic Chemistry. 43: 5981. doi:10.1021/ic049281s. {{cite journal}}: |first2= missing |last2= (help)
↑ Arsenic, mindat.org
↑ editor-in-chief, David R. Lide. (2000). "Magnetic susceptibility of the elements and inorganic compounds". Handbook of Chemistry and Physics (PDF) (81 ed.). CRC press. ISBN 0849304814. {{cite book}}: |author= has generic name (help)

[Gokcen1989-1] Gokcen, N. A (1989). "The As (arsenic) system". Bull. Alloy Phase Diagrams. 10: 11–22. doi:10.1007/BF02882166.

[2] Ellis, Bobby D. (2004). "Stabilized Arsenic(I) Iodide: A Ready Source of Arsenic Iodide Fragments and a Useful Reagent for the Generation of Clusters". Inorganic Chemistry. 43: 5981. doi:10.1021/ic049281s. {{cite journal}}: |first2= missing |last2= (help)

[3] Arsenic, mindat.org

[4] tor-in-chief, David R. Lide. (2000). "Magnetic susceptibility of the elements and inorganic compounds". Handbook of Chemistry and Physics (PDF) (81 ed.). CRC press. ISBN 0849304814. {{cite book}}: |author= has generic name (help)

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