Talio
81
Tl
Grupo
13
Perio
6
Bloko
p
Protonoj
Elektronoj
Neŭtronoj
81
81
123
Ĝeneralaj Propraĵoj
Atoma Nombro
81
Atommaso
204,3833
Amasa Nombro
204
Kategorio
Posttransiraj metaloj
Koloro
Arĝento
Radioaktiva
Ne
From Greek thallos, meanin a green shoot or twig
Kristala Strukturo
Simpla Sesangula
Historio
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.
Elektronoj per ŝelo
2, 8, 18, 32, 18, 3
Elektrona Agordo
[Xe] 4f14 5d10 6s2 6p1
Agatha Christie made use of thallium's toxicity in her novel The Pale Horse
Fizikaj Propraĵoj
Fazo
Solido
Denso
11,85 g/cm3
Fandpunkto
577,15 K | 304 °C | 579,2 °F
Bolpunkto
1746,15 K | 1473 °C | 2683,4 °F
Varmo de Fuzio
4,2 kJ/mol
Varmo de Vaporiĝo
165 kJ/mol
Specifa Varmo Kapacito
0,129 J/g·K
Krusta Abundo
0,000053%
Universa Abundo
5×10-8%
CAS Nombro
7440-28-0
PubChem Kunmetita Identiga Nombro
5359464
Atomaj Propraĵoj
Atoma Radiuso
170 pm
Kovalenta Radiuso
145 pm
Elektronegativeco
1,62 (Pauling-skalo)
Potencialo de jonigo
6,1082 eV
Atoma Volumo
17,2 cm3/mol
Termika Kondukto
0,461 W/cm·K
Oksidaj Ŝtatoj
1, 3
Aplikoj
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
Izotopoj
Stabilaj Izotopoj
203Tl, 205TlMalstabilaj Isotopoj
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