Тербиум
65
Tb
Група
Нема одговор
Периода
6
блок
f
Протони
Електрони
Неутрони
65
65
94
Општи Својства
Атомски број
65
Атомска тежина
158,92535
Масен број
159
Категорија
Лантаноид
Боја
Сребро
Радиоактивно
Не
Terbium was named after Ytterby, a town in Sweden
Кристална структура
Обично хексагонално
Историја
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.
Електрони на орбитала
2, 8, 18, 27, 8, 2
Електронска конфигурација
[Xe] 4f9 6s2
Terbium is soft enough to be cut with a knife
Физички Својства
Фаза
Цврста состојба
Густина
8,229 g/cm3
Точка на топење
1629,15 K | 1356 °C | 2472,8 °F
Точка на вриење
3503,15 K | 3230 °C | 5846 °F
Топлина на топење
10,8 kJ/mol
Топлина на испарување
295 kJ/mol
Специфичен топлински капацитет
0,182 J/g·K
Обилност во Земјината кора
0,000093%
Обилност во Универзумот
5×10-8%
CAS број
7440-27-9
PubChem CID број
23958
Атомски Својства
Атомски полупречник
177 pm
Ковалентен полупречник
194 pm
Електронегативност
1,2 (Полингова скала)
Јонизациски потенцијал
5,8638 eV
Атомски волумен
19,20 cm3/mol
Топлинска спроводливост
0,111 W/cm·K
Оксидациски состојби
1, 3, 4
Примени
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
Изотопи
Стабилни изотопи
159TbНестабилни изотопи
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