Тербијум
65
Tb
Група
н/д
Периода
6
Блок
f
Протони
Електрони
Неутрони
65
65
94
Општа својства
Атомски број
65
Атомска маса
158,92535
Масени број
159
Категорија
Лантаноиди
Боја
Сребрена
Радиоактиван
Не
Terbium was named after Ytterby, a town in Sweden
Кристална структура
Једноставни Хескагонал
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 по љусци
2, 8, 18, 27, 8, 2
Електронска конфигурација
[Xe] 4f9 6s2
Terbium is soft enough to be cut with a knife
Физичка својства
Стање
Чвсрто
Густина
8,229 g/cm3
Температура топљења
1629,15 K | 1356 °C | 2472,8 °F
Температура кључања
3503,15 K | 3230 °C | 5846 °F
Топлота топљења
10,8 kJ/mol
Топлота испаравања
295 kJ/mol
Специфична топлота
0,182 J/g·K
Заступљеност у Земљиној кори
0,000093%
Заступљеност у Космосу
5×10-8%
CAS број
7440-27-9
ПубЦхем ЦИД број
23958
Атомска својства
Атомски радијус
177 pm
Ковалентни радијус
194 pm
Електронегативност
1,2 (Полингова скала)
Јонизујући потенцијал
5,8638 eV
Молска запремина
19,20 cm3/mol
Топлотна проводљивост
0,111 W/cm·K
Оксидациона стања
1, 3, 4
Примена
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