Talyum
81
Tl
Grup
13
Periyot
6
Blok
p
Protonlar
Elektronlar
Nötronlar
81
81
123
Temel Özellikleri
Atom numarası
81
Atom ağırlığı
204,3833
Kütle Numarası
204
Kategori
Ara geçiş metalleri
Renk
Gümüşi
Radyoaktif
Hayir
From Greek thallos, meanin a green shoot or twig
Kristal yapısı
Basit altıgen
Tarihi
Thallium was discovered spectroscopically by Sir William Crookes in 1861, in London.
In 1862, Claude-Auguste Lamy used a spectrometer to determine the composition of a selenium-containing substance which was deposited during the production of sulfuric acid from pyrite.
He noticed the new green line in the spectra and concluded that a new element was present.
In 1862, Claude-Auguste Lamy used a spectrometer to determine the composition of a selenium-containing substance which was deposited during the production of sulfuric acid from pyrite.
He noticed the new green line in the spectra and concluded that a new element was present.
Enerji seviyesi başına Elektronlar
2, 8, 18, 32, 18, 3
Elektron dizilimi
[Xe] 4f14 5d10 6s2 6p1
Agatha Christie made use of thallium's toxicity in her novel The Pale Horse
Fiziksel Özellikleri
Faz
Katı
Yoğunluk
11,85 g/cm3
Ergime noktası
577,15 K | 304 °C | 579,2 °F
Kaynama noktası
1746,15 K | 1473 °C | 2683,4 °F
Ergime ısısı
4,2 kJ/mol
Buharlaşma ısısı
165 kJ/mol
Isı kapasitesi
0,129 J/g·K
Dünya kabuğundaki bulunulabilirliği
0,000053%
Evrendeki bulunulabilirliği
5×10-8%
CAS Numarası
7440-28-0
PubChem CID Numarası
5359464
Atom Özellikleri
Atom yarıçapı
170 pm
Kovalent yarıçapı
145 pm
Elektronegatifliği
1,62 (Pauling ölçeği)
İyonlaşma enerjisi
6,1082 eV
Atomik Hacim
17,2 cm3/mol
Isıl iletkenlik
0,461 W/cm·K
Yükseltgenme seviyeleri
1, 3
Uygulamalar
Thallium selenide has been used in a bolometer for infrared detection.
Thallium is also used in gamma radiation detection equipment.
Thallium oxide has been used to produce glasses with a high index of refraction, and is used in the manufacture of photo cells.
Some of the electrodes in dissolved oxygen analyzers contain thallium.
Thallium is also used in gamma radiation detection equipment.
Thallium oxide has been used to produce glasses with a high index of refraction, and is used in the manufacture of photo cells.
Some of the electrodes in dissolved oxygen analyzers contain thallium.
Thallium and its compounds are highly toxic
İzotoplar
Kararlı izotoplar
203Tl, 205TlKararsız izotoplar
176Tl, 177Tl, 178Tl, 179Tl, 180Tl, 181Tl, 182Tl, 183Tl, 184Tl, 185Tl, 186Tl, 187Tl, 188Tl, 189Tl, 190Tl, 191Tl, 192Tl, 193Tl, 194Tl, 195Tl, 196Tl, 197Tl, 198Tl, 199Tl, 200Tl, 201Tl, 202Tl, 204Tl, 206Tl, 207Tl, 208Tl, 209Tl, 210Tl, 211Tl, 212Tl