Arsenik

33
As
Kumpulan
15
Kala
4
Blok
p
Proton
Elektron
Neutron
33
33
42
Ciri-Ciri Am
Nombor atom
33
Berat atom
74.9216
Nombor jisim
75
Kategori
Metaloid
Warna
Perak
Radioaktif
Tidak
From the Latin word arsenicum, Greek arsenikon
Struktur hablur
Trigonal Ringkas
Sejarah
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.
Bilangan elektron per petala
2, 8, 18, 5
Konfigurasi elektron
[Ar] 3d10 4s2 4p3
As
Prawns are known to contain quite high levels of arsenic
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
5.776 g/cm3
Takat lebur
1090.15 K | 817 °C | 1502.6 °F
Takat didih
876.15 K | 603 °C | 1117.4 °F
Haba pelakuran
27.7 kJ/mol
Haba pengewapan
32.4 kJ/mol
Muatan haba molar
0.329 J/g·K
Banyak pada kerak bumi
0.00021%
Banyak pada alam semesta
8×10-7%
Ultrapure
Kredit imej: Images-of-elements
Ultrapure metallic arsenic under argon
Nombor CAS
7440-38-2
PubChem CID Number
5359596
Ciri-Ciri Atom
Jejari atom
119 pm
Jejari kovalen
119 pm
Keelektronegatifan
2.18 (Skala Pauling)
Kebolehan mengion
9.7886 eV
Isipadu atom
12.97 cm3/mol
Daya pengaliran terma
0.502 W/cm·K
Keadaan pengoksidaan
-3, 2, 3, 5
Aplikasi
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
Isotop
Isotop stabil
75As
Isotop tidak stabil
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