Baryum
56
Ba
Grup
2
Periyot
6
Blok
s
Protonlar
Elektronlar
Nötronlar
56
56
81
Temel Özellikleri
Atom numarası
56
Atom ağırlığı
137,327
Kütle Numarası
137
Kategori
Alkali toprak metalleri
Renk
Gümüşi
Radyoaktif
Hayir
From the Greek word barys, heavy
Kristal yapısı
Hacim merkezli kübik
Tarihi
Barium was identified as a new element in 1774 by Carl Wilhelm Scheele.
Barium was first isolated by electrolysis of molten barium salts in 1808, by Sir Humphry Davy in England.
Robert Bunsen and Augustus Matthiessen obtained pure barium by electrolysis of a molten mixture of barium chloride and ammonium chloride.
Barium was first isolated by electrolysis of molten barium salts in 1808, by Sir Humphry Davy in England.
Robert Bunsen and Augustus Matthiessen obtained pure barium by electrolysis of a molten mixture of barium chloride and ammonium chloride.
Enerji seviyesi başına Elektronlar
2, 8, 18, 18, 8, 2
Elektron dizilimi
[Xe] 6s2
At low doses, barium acts as a muscle stimulant
Fiziksel Özellikleri
Faz
Katı
Yoğunluk
3,594 g/cm3
Ergime noktası
1000,15 K | 727 °C | 1340,6 °F
Kaynama noktası
2170,15 K | 1897 °C | 3446,6 °F
Ergime ısısı
8 kJ/mol
Buharlaşma ısısı
140 kJ/mol
Isı kapasitesi
0,204 J/g·K
Dünya kabuğundaki bulunulabilirliği
0,034%
Evrendeki bulunulabilirliği
1×10-6%
CAS Numarası
7440-39-3
PubChem CID Numarası
5355457
Atom Özellikleri
Atom yarıçapı
222 pm
Kovalent yarıçapı
215 pm
Elektronegatifliği
0,89 (Pauling ölçeği)
İyonlaşma enerjisi
5,2117 eV
Atomik Hacim
39,24 cm3/mol
Isıl iletkenlik
0,184 W/cm·K
Yükseltgenme seviyeleri
2
Uygulamalar
Barium is used as a flashed getter in vacuum tubes to remove the last traces of gases.
It is often used in barium-nickel alloys for spark plug wire.
Barium sulfate is important to the petroleum industry as a drilling fluid in oil and gas wells.
Barium is also used in medicine to detect abnormalities in the digestive system.
It is often used in barium-nickel alloys for spark plug wire.
Barium sulfate is important to the petroleum industry as a drilling fluid in oil and gas wells.
Barium is also used in medicine to detect abnormalities in the digestive system.
Water-soluble barium compounds are poisonous
İzotoplar
Kararlı izotoplar
130Ba, 132Ba, 134Ba, 135Ba, 136Ba, 137Ba, 138BaKararsız izotoplar
114Ba, 115Ba, 116Ba, 117Ba, 118Ba, 119Ba, 120Ba, 121Ba, 122Ba, 123Ba, 124Ba, 125Ba, 126Ba, 127Ba, 128Ba, 129Ba, 131Ba, 133Ba, 139Ba, 140Ba, 141Ba, 142Ba, 143Ba, 144Ba, 145Ba, 146Ba, 147Ba, 148Ba, 149Ba, 150Ba, 151Ba, 152Ba, 153Ba