Rubidio
37
Rb
Grupo
1
Perio
5
Bloko
s
Protonoj
Elektronoj
Neŭtronoj
37
37
48
Ĝeneralaj Propraĵoj
Atoma Nombro
37
Atommaso
85,4678
Amasa Nombro
85
Kategorio
Alkalaj metaloj
Koloro
Arĝento
Radioaktiva
Ne
From the Latin word rubidus, deepest red
Kristala Strukturo
Korpo Centrita Kubo
Historio
German chemists Robert Bunsen and Gustav Kirchhoff discovered rubidium in 1861 by the newly developed method of flame spectroscopy.
The separation of the metal was tried by Bunsen, but he never got samples with more than 18% of Rubidium.
The separation of the metal was only accomplished by George de Hevesy, through the hydrolysis of melted rubidium hydroxide.
The separation of the metal was tried by Bunsen, but he never got samples with more than 18% of Rubidium.
The separation of the metal was only accomplished by George de Hevesy, through the hydrolysis of melted rubidium hydroxide.
Elektronoj per ŝelo
2, 8, 18, 8, 1
Elektrona Agordo
[Kr] 5s1
Rubidium burns with a reddish-violet flame color
Fizikaj Propraĵoj
Fazo
Solido
Denso
1,532 g/cm3
Fandpunkto
312,46 K | 39,31 °C | 102,76 °F
Bolpunkto
961,15 K | 688 °C | 1270,4 °F
Varmo de Fuzio
2,19 kJ/mol
Varmo de Vaporiĝo
72 kJ/mol
Specifa Varmo Kapacito
0,363 J/g·K
Krusta Abundo
0,006%
Universa Abundo
1×10-6%
CAS Nombro
7440-17-7
PubChem Kunmetita Identiga Nombro
5357696
Atomaj Propraĵoj
Atoma Radiuso
248 pm
Kovalenta Radiuso
220 pm
Elektronegativeco
0,82 (Pauling-skalo)
Potencialo de jonigo
4,1771 eV
Atoma Volumo
55,9 cm3/mol
Termika Kondukto
0,582 W/cm·K
Oksidaj Ŝtatoj
-1, 1
Aplikoj
Rubidium is used as a getter in vacuum tubes and as a photocell component.
Rubidium compounds are sometimes used in fireworks to give them a purple color.
Rubidium salts are used in glasses and ceramics.
Rubidium-87 is slightly radioactive and has been used extensively in dating rocks.
Rubidium compounds are sometimes used in fireworks to give them a purple color.
Rubidium salts are used in glasses and ceramics.
Rubidium-87 is slightly radioactive and has been used extensively in dating rocks.
Rubidium is not known to be toxic
Izotopoj
Stabilaj Izotopoj
85RbMalstabilaj Isotopoj
71Rb, 72Rb, 73Rb, 74Rb, 75Rb, 76Rb, 77Rb, 78Rb, 79Rb, 80Rb, 81Rb, 82Rb, 83Rb, 84Rb, 86Rb, 87Rb, 88Rb, 89Rb, 90Rb, 91Rb, 92Rb, 93Rb, 94Rb, 95Rb, 96Rb, 97Rb, 98Rb, 99Rb, 100Rb, 101Rb, 102Rb