Disprozio
66
Dy
Grupo
Neniu
Perio
6
Bloko
f
Protonoj
Elektronoj
Neŭtronoj
66
66
97
Ĝeneralaj Propraĵoj
Atoma Nombro
66
Atommaso
162,5
Amasa Nombro
163
Kategorio
Lantanoidoj
Koloro
Arĝento
Radioaktiva
Ne
From the Greek word dysprositos, meaning hard to get at
Kristala Strukturo
Simpla Sesangula
Historio
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.
Elektronoj per ŝelo
2, 8, 18, 28, 8, 2
Elektrona Agordo
[Xe] 4f10 6s2
Naturally occurring dysprosium is composed of 7 isotopes
Fizikaj Propraĵoj
Fazo
Solido
Denso
8,55 g/cm3
Fandpunkto
1680,15 K | 1407 °C | 2564,6 °F
Bolpunkto
2840,15 K | 2567 °C | 4652,6 °F
Varmo de Fuzio
11,1 kJ/mol
Varmo de Vaporiĝo
280 kJ/mol
Specifa Varmo Kapacito
0,17 J/g·K
Krusta Abundo
0,00062%
Universa Abundo
2×10-7%
CAS Nombro
7429-91-6
PubChem Kunmetita Identiga Nombro
23912
Atomaj Propraĵoj
Atoma Radiuso
178 pm
Kovalenta Radiuso
192 pm
Elektronegativeco
1,22 (Pauling-skalo)
Potencialo de jonigo
5,9389 eV
Atoma Volumo
19,0 cm3/mol
Termika Kondukto
0,107 W/cm·K
Oksidaj Ŝtatoj
2, 3
Aplikoj
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
Izotopoj
Stabilaj Izotopoj
156Dy, 158Dy, 160Dy, 161Dy, 162Dy, 163Dy, 164DyMalstabilaj Isotopoj
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