Terbij
65
Tb
Skupina
n/p
Perioda
6
Blok
f
Protoni
Elektroni
Nevtroni
65
65
94
Splošne lastnosti
Vrstno število
65
Atomska teža
158,92535
Masno število
159
Kategorija
Lantanoidi
Barva
Srebrna
Radioaktivno
Ne
Terbium was named after Ytterby, a town in Sweden
Kristalna struktura
Heksagonalna
Zgodovina
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.
Elektroni po lupinah
2, 8, 18, 27, 8, 2
Razporeditev elektronov
[Xe] 4f9 6s2
Terbium is soft enough to be cut with a knife
Fizikalne lastnosti
Faza snovi
Trdnina
Gostota
8,229 g/cm3
Tališče
1629,15 K | 1356 °C | 2472,8 °F
Vrelišče
3503,15 K | 3230 °C | 5846 °F
Talilna toplota
10,8 kJ/mol
Izparilna toplota
295 kJ/mol
Toplotna kapaciteta
0,182 J/g·K
Zastopanost v Zemljini skorji
0,000093%
Zastopanost v vesolju
5×10-8%
CAS številka
7440-27-9
PubChem CID številka
23958
Atomske lastnosti
Atomski polmer
177 pm
Kovalentni polmer
194 pm
Elektronegativnost
1,2 (Paulingova lestvica)
Ionizacijski potencial
5,8638 eV
Atomski volumen
19,20 cm3/mol
Toplotna prevodnost
0,111 W/cm·K
Oksidacijska stanja
1, 3, 4
Uporabe
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