Terbij
65
Tb
Skupina
n/a
Perioda
6
Blok
f
Protoni
Elektroni
Neutroni
65
65
94
Opća svojstva
Atomski broj
65
Relativna atomska masa
158,92535
Maseni broj
159
Kategorija
Lantanoidi
Boja
Srebrna
Radioaktivan
Ne
Terbij je imenovan po Ytterbyu, gradu u Švedskoj
Kristalna struktura
Jednostavna heksagonska
Povijest
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.
Elektrona po ljusci
2, 8, 18, 27, 8, 2
Elektronska konfiguracija
[Xe] 4f9 6s2
Terbium is soft enough to be cut with a knife
Fizikalna svojstva
Agregacijsko stanje
Čvrsto
Gustoća
8,229 g/cm3
Talište
1629,15 K | 1356 °C | 2472,8 °F
Vrelište
3503,15 K | 3230 °C | 5846 °F
Toplina taljenja
10,8 kJ/mol
Toplina isparavanja
295 kJ/mol
Specifični toplinski kapacitet
0,182 J/g·K
Zastupljenost u Zemljinoj kori
0,000093%
Zastupljenost u svemiru
5×10-8%
CAS broj
7440-27-9
PubChem CID broj
23958
Atomska svojstva
Atomski radijus
177 pm
Kovalentni radijus
194 pm
Elektronegativnost
1,2 (Paulingova ljestvica)
Potencijal ionizacije
5,8638 eV
Atomski volumen
19,20 cm3/mol
Toplinska vodljivost
0,111 W/cm·K
Stanja oksidacije
1, 3, 4
Primjene
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
Izotopi
Stabilni izotopi
159TbNestabilni izotopi
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