| Arsenic |
|
33As
|
|
|
| Appearance |
metallic grey
 |
| General properties |
| Name, simbolo, kaiphan |
arsenic, As, 33 |
| Pronunciation |
Plantilya:IPAc-en Plantilya:Respell,
also Plantilya:IPAc-en Plantilya:Respell when attributive |
| Element category |
metalloid |
| Group, period, block |
15, 4, p |
| Standard atomic weight |
74.92160(2) |
| Electron configuration |
[Ar] 4s2 3d10 4p3
2, 8, 18, 5
|
| History |
| Discovery |
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[1] 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 |
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T (K) |
553 |
596 |
646 |
706 |
781 |
874 |
|
| Atomic properties |
| Oxidation states |
5, 3, 2, 1,[2] -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[3]
|
| Magnetic ordering |
diamagnetic[4] |
| 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 |
|
|
|
· 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.
Ang mga gi basihan niini [usba]
- ↑ 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.
- ↑ Arsenic, mindat.org
- ↑ editor-in-chief, David R. Lide. (2000). "Magnetic susceptibility of the elements and inorganic compounds". Handbook of Chemistry and Physics (81 ed.), CRC press. ISBN 0849304814, http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf.
Galeriya sa hulagway [usba]
