Arsenico

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
	v; t; e; · r

Ang arsenico (Iningles arsenic) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga As ug kaiphan nga atomik 33. Ang arsenico mao ang metalloid.

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Galeriya sa hulagway

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