Arsenic

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33 germaniumarsenicselenium
P

As

Sb
As-TableImage.png
General
Lagyu, Symbol, Numeru arsenic, As, 33
Chemical series metalloids
Lupung, Period, Bloki 15, 4, p
Itsura metallic gray
As,33.jpg
Standard atomic a timbang 74.92160(2)  g·mol−1
Electron configuration [Ar] 3d10 4s2 4p3
Electrons balang shell 2, 8, 18, 5
Physical properties
Phase solid
Pangasiksik (near r.t.) 5.727  g·cm−3
Liquid density at m.p. 5.22  g·cm−3
Malalasong point 1090 K
(817 °C, 1503 °F)
Bubukal a point subl. 887 K
(614 °C, 1137 °F)
Critical temperature 1673 K
Heat of fusion (gray) 24.44  kJ·mol−1
Heat of vaporization ? 34.76  kJ·mol−1
Agiu king pali (25 °C) 24.64  J·mol−1·K−1
Vapor pressure
P(Pa) 1 10 100 1 k 10 k 100 k
at T(K) 553 596 646 706 781 874
Atomic properties
Crystal pangatalakad rhombohedral
Oxidation states ±3, 5
(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 115pm
Atomic radius (calc.) 114  pm
Covalent radius 119  pm

Template:Elementbox vanderwaalsrad pm

Dakal pang Aliwa
Magnetic ordering no data
Electrical resistivity (20 °C) 333 n Ω·m
Thermal conductivity (300 K) 50.2  W·m−1·K−1
Young's modulus 8  GPa
Bulk modulus 22  GPa
Mohs hardness 3.5
Brinell a sias 1440  MPa
[[CAS talaan a numeru] 7440-38-2
Mepiling isotopes
Main article: Isotopes of arsenic
iso NA kapitnang-bie DM DE (MeV) DP
73As syn 80.3 d ε - 73Ge
γ 0.05D, 0.01D, e -

Template:Elementbox isotopes decay4

75As 100% Ing As stable ya kambe ning 42 neutrons
Dalerayan


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