Terbium
65
Tb
Groep
n/a
Periode
6
Blok
f
Protrone
Elektrone
Neutrone
65
65
94
Algemene Eienskappe
Atoom Nommer
65
Atoommassa
158,92535
Massa Nommer
159
Kategorie
Lantaniede
Kleur
Silver
Radioaktief
Nee
Terbium was named after Ytterby, a town in Sweden
Kristalstruktuur
Eenvoudige seshoekige
Geskiendenis
Terbium was discovered in 1843 by Swedish chemist Carl Gustaf Mosander, who detected it as an impurity in yttria.
Using ammonium hydroxide he precipitated fractions of different basicity from yttria.
In these fractions he found that the fraction that was essentially colorless in solution, but gave a brown-tinged oxide was terbium.
Using ammonium hydroxide he precipitated fractions of different basicity from yttria.
In these fractions he found that the fraction that was essentially colorless in solution, but gave a brown-tinged oxide was terbium.
Elektrone per skil
2, 8, 18, 27, 8, 2
Elektronkonfigurasie
[Xe] 4f9 6s2
Terbium is soft enough to be cut with a knife
Fisiese Eienskappe
Fase
Soliede
Digtheid
8,229 g/cm3
Smeltpunt
1629,15 K | 1356 °C | 2472,8 °F
Kookpunt
3503,15 K | 3230 °C | 5846 °F
Heat of Fusion
10,8 kJ/mol
Heat of Vaporization
295 kJ/mol
Spesifieke Hitte Kapasiteit
0,182 J/g·K
Oorvloed in die aardkors
0,000093%
Oorvloed in die heelal
5×10-8%
CAS Nommer
7440-27-9
PubChem CID Nommer
23958
Atomiese Eienskappe
Atoom radius
177 pm
Kovalente Radius
194 pm
Elektronegatiewiteit
1,2 (Pauling scale)
Ionisasie potensiaal
5,8638 eV
Atoom volume
19,20 cm3/mol
Termiese geleidingsvermoë
0,111 W/cm·K
Oksidasiestate
1, 3, 4
Toepassings
Terbium is used in alloys and in the production of electronic devices.
It is also used as a dopant for materials in solid-state devices and optical fibers.
Terbium oxide is in fluorescent lamps and TV tubes.
The brilliant fluorescence allows terbium to be used as a probe in biochemistry.
It is also used as a dopant for materials in solid-state devices and optical fibers.
Terbium oxide is in fluorescent lamps and TV tubes.
The brilliant fluorescence allows terbium to be used as a probe in biochemistry.
Terbium is considered to be moderately toxic
Isotope
Stabiele Isotope
159TbOnstabiele Isotope
136Tb, 137Tb, 138Tb, 139Tb, 140Tb, 141Tb, 142Tb, 143Tb, 144Tb, 145Tb, 146Tb, 147Tb, 148Tb, 149Tb, 150Tb, 151Tb, 152Tb, 153Tb, 154Tb, 155Tb, 156Tb, 157Tb, 158Tb, 160Tb, 161Tb, 162Tb, 163Tb, 164Tb, 165Tb, 166Tb, 167Tb, 168Tb, 169Tb, 170Tb, 171Tb