Arzen
33
As
Skupina
15
Perioda
4
Blok
p
Protoni
Elektroni
Nevtroni
33
33
42
Splošne lastnosti
Vrstno število
33
Atomska teža
74,9216
Masno število
75
Kategorija
Polkovine
Barva
Srebrna
Radioaktivno
Ne
From the Latin word arsenicum, Greek arsenikon
Kristalna struktura
Enostavna trigonalna
Zgodovina
Greek historian Olympiodorus of Thebes roasted arsenic sulfide and obtained white arsenic during 5th century AD.
Albertus Magnus is believed to have been the first to isolate the element from a compound in 1250, by heating soap together with arsenic trisulfide.
In 1649, Johann Schröder published two ways of preparing arsenic.
Albertus Magnus is believed to have been the first to isolate the element from a compound in 1250, by heating soap together with arsenic trisulfide.
In 1649, Johann Schröder published two ways of preparing arsenic.
Elektroni po lupinah
2, 8, 18, 5
Razporeditev elektronov
[Ar] 3d10 4s2 4p3
Prawns are known to contain quite high levels of arsenic
Fizikalne lastnosti
Faza snovi
Trdnina
Gostota
5,776 g/cm3
Tališče
1090,15 K | 817 °C | 1502,6 °F
Vrelišče
876,15 K | 603 °C | 1117,4 °F
Talilna toplota
27,7 kJ/mol
Izparilna toplota
32,4 kJ/mol
Toplotna kapaciteta
0,329 J/g·K
Zastopanost v Zemljini skorji
0,00021%
Zastopanost v vesolju
8×10-7%
CAS številka
7440-38-2
PubChem CID številka
5359596
Atomske lastnosti
Atomski polmer
119 pm
Kovalentni polmer
119 pm
Elektronegativnost
2,18 (Paulingova lestvica)
Ionizacijski potencial
9,7886 eV
Atomski volumen
12,97 cm3/mol
Toplotna prevodnost
0,502 W/cm·K
Oksidacijska stanja
-3, 2, 3, 5
Uporabe
The toxicity of arsenic to insects, bacteria and fungi led to its use as a wood preservative and as insecticides.
Arsenic is used in bronzing, pyrotechny, and for hardening and improving the sphericity of shot.
Gallium arsenide is a semiconductor used in laser diodes and LEDs.
Small amounts of arsenic can be used in lead alloys for ammunition.
Arsenic is used in bronzing, pyrotechny, and for hardening and improving the sphericity of shot.
Gallium arsenide is a semiconductor used in laser diodes and LEDs.
Small amounts of arsenic can be used in lead alloys for ammunition.
Arsenic and its compounds are poisonous
Izotopi
Stabilni izotopi
75AsNestabilni izotopi
60As, 61As, 62As, 63As, 64As, 65As, 66As, 67As, 68As, 69As, 70As, 71As, 72As, 73As, 74As, 76As, 77As, 78As, 79As, 80As, 81As, 82As, 83As, 84As, 85As, 86As, 87As, 88As, 89As, 90As, 91As, 92As