Argon
18
Ar
Grup
18
Periyot
3
Blok
p
Protonlar
Elektronlar
Nötronlar
18
18
22
Temel Özellikleri
Atom numarası
18
Atom ağırlığı
39,948
Kütle Numarası
40
Kategori
Soygaz
Renk
Renksiz
Radyoaktif
Hayir
From the Greek argos, inactive
Kristal yapısı
Yüzey merkezli kübik
Tarihi
Argon was suspected to be present in air by Henry Cavendish in 1785.
It was not isolated until 1894 by Lord Rayleigh and Sir William Ramsay in Scotland.
Argon became the first member of the noble gases to be discovered.
In 1957, IUPAC agreed that the symbol should change from A to Ar.
It was not isolated until 1894 by Lord Rayleigh and Sir William Ramsay in Scotland.
Argon became the first member of the noble gases to be discovered.
In 1957, IUPAC agreed that the symbol should change from A to Ar.
Enerji seviyesi başına Elektronlar
2, 8, 8
Elektron dizilimi
[Ne] 3s2 3p6
Argon makes a distinctive blue-green gas laser
Fiziksel Özellikleri
Faz
Gaz
Yoğunluk
0,0017837 g/cm3
Ergime noktası
83,8 K | -189,35 °C | -308,83 °F
Kaynama noktası
87,3 K | -185,85 °C | -302,53 °F
Ergime ısısı
1,18 kJ/mol
Buharlaşma ısısı
6,5 kJ/mol
Isı kapasitesi
0,52 J/g·K
Dünya kabuğundaki bulunulabilirliği
0,00015%
Evrendeki bulunulabilirliği
0,02%
CAS Numarası
7440-37-1
PubChem CID Numarası
23968
Atom Özellikleri
Atom yarıçapı
71 pm
Kovalent yarıçapı
106 pm
Elektronegatifliği
-
İyonlaşma enerjisi
15,7596 eV
Atomik Hacim
22,4 cm3/mol
Isıl iletkenlik
0,0001772 W/cm·K
Yükseltgenme seviyeleri
0
Uygulamalar
Argon gas is used to fill conventional incandescent and fluorescent light bulbs.
Argon is also used as an inert gas shield for arc welding and cutting, as blanket for the production of titanium and other reactive elements.
It is used as a protective atmosphere for growing silicon and germanium crystals.
Argon is also used as an inert gas shield for arc welding and cutting, as blanket for the production of titanium and other reactive elements.
It is used as a protective atmosphere for growing silicon and germanium crystals.
Argon is considered to be non-toxic
İzotoplar
Kararlı izotoplar
36Ar, 38Ar, 40ArKararsız izotoplar
30Ar, 31Ar, 32Ar, 33Ar, 34Ar, 35Ar, 37Ar, 39Ar, 41Ar, 42Ar, 43Ar, 44Ar, 45Ar, 46Ar, 47Ar, 48Ar, 49Ar, 50Ar, 51Ar, 52Ar, 53Ar