Arsenik

33
As
Grupp
15
Period
4
Block
p
Protoner
Electrons
Neutroner
33
33
42
Generella Egenskaper
Atomnummer
33
Atommassa
74,9216
Mass Number
75
Kategori
Metalloid
Färg
Silver
Radioaktiv
Nej
From the Latin word arsenicum, Greek arsenikon
Kristallstruktur
Enkelt trigonal
Historia
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.
Elektroner per skal
2, 8, 18, 5
Elektronkonfiguration
[Ar] 3d10 4s2 4p3
As
Prawns are known to contain quite high levels of arsenic
Fysikaliska Egenskaper
Aggregationstillstånd
Fast
Densitet
5,776 g/cm3
Smältpunkt
1090,15 K | 817 °C | 1502,6 °F
Kokpunkt
876,15 K | 603 °C | 1117,4 °F
Smältvärme
27,7 kJ/mol
Ångbildningsvärme
32,4 kJ/mol
Specifik värmekapacitet
0,329 J/g·K
Abundance in Earth's crust
0,00021%
Abundance in Universe
8×10-7%
Ultrapure
Bildkrediter: Images-of-elements
Ultrapure metallic arsenic under argon
CAS Number
7440-38-2
PubChem CID Number
5359596
Atomära Egenskaper
Atomradie
119 pm
Kovalent radie
119 pm
Elektronegativitet
2,18 (Paulingskalan)
Jonisationspotential
9,7886 eV
Molvolym
12,97 cm3/mol
Värmeledningsförmåga
0,502 W/cm·K
Oxidationstillstånd
-3, 2, 3, 5
Applications
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 and its compounds are poisonous
Isotoper
Stabila isotoper
75As
Instabila isotoper
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