Диспрозиум
66
Dy
Група
Нема одговор
Периода
6
блок
f
Протони
Електрони
Неутрони
66
66
97
Општи Својства
Атомски број
66
Атомска тежина
162,5
Масен број
163
Категорија
Лантаноид
Боја
Сребро
Радиоактивно
Не
From the Greek word dysprositos, meaning hard to get at
Кристална структура
Обично хексагонално
Историја
French chemist Paul Émile Lecoq de Boisbaudran, while working with holmium oxide, separated dysprosium oxide from it in Paris in 1886.
His procedure for isolating the dysprosium involved dissolving dysprosium oxide in acid, then adding ammonia to precipitate the hydroxide.
It was not isolated in pure form until the development of ion exchange techniques in the 1950s.
His procedure for isolating the dysprosium involved dissolving dysprosium oxide in acid, then adding ammonia to precipitate the hydroxide.
It was not isolated in pure form until the development of ion exchange techniques in the 1950s.
Електрони на орбитала
2, 8, 18, 28, 8, 2
Електронска конфигурација
[Xe] 4f10 6s2
Naturally occurring dysprosium is composed of 7 isotopes
Физички Својства
Фаза
Цврста состојба
Густина
8,55 g/cm3
Точка на топење
1680,15 K | 1407 °C | 2564,6 °F
Точка на вриење
2840,15 K | 2567 °C | 4652,6 °F
Топлина на топење
11,1 kJ/mol
Топлина на испарување
280 kJ/mol
Специфичен топлински капацитет
0,17 J/g·K
Обилност во Земјината кора
0,00062%
Обилност во Универзумот
2×10-7%
CAS број
7429-91-6
PubChem CID број
23912
Атомски Својства
Атомски полупречник
178 pm
Ковалентен полупречник
192 pm
Електронегативност
1,22 (Полингова скала)
Јонизациски потенцијал
5,9389 eV
Атомски волумен
19,0 cm3/mol
Топлинска спроводливост
0,107 W/cm·K
Оксидациски состојби
2, 3
Примени
Dysprosium oxide-nickel cermets are used in neutron-absorbing control rods in nuclear reactors.
Dysprosium is used in data storage applications such as compact discs and hard discs.
It is also used in dosimeters for measuring ionizing radiation.
Dysprosium iodide and dysprosium bromide are used in high intensity metal-halide lamps.
Dysprosium is used in data storage applications such as compact discs and hard discs.
It is also used in dosimeters for measuring ionizing radiation.
Dysprosium iodide and dysprosium bromide are used in high intensity metal-halide lamps.
Dysprosium is considered to be moderately toxic
Изотопи
Стабилни изотопи
156Dy, 158Dy, 160Dy, 161Dy, 162Dy, 163Dy, 164DyНестабилни изотопи
138Dy, 139Dy, 140Dy, 141Dy, 142Dy, 143Dy, 144Dy, 145Dy, 146Dy, 147Dy, 148Dy, 149Dy, 150Dy, 151Dy, 152Dy, 153Dy, 154Dy, 155Dy, 157Dy, 159Dy, 165Dy, 166Dy, 167Dy, 168Dy, 169Dy, 170Dy, 171Dy, 172Dy, 173Dy