Dysprosium
66
Dy
Gruppe
n/a
Periode
6
Blokk
f
Protons
Electrons
Neutrons
66
66
97
Generelle eigenskapar
Atomnummer
66
Atommasse
162,5
Mass Number
163
Kategori
Lantanid
Farge
Silver
Radioactive
Nei
From the Greek word dysprositos, meaning hard to get at
Krystallstruktur
Simple Hexagonal
Historie
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.
Elektron per energinivå
2, 8, 18, 28, 8, 2
Elektronkonfigurasjon
[Xe] 4f10 6s2
Naturally occurring dysprosium is composed of 7 isotopes
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
8,55 g/cm3
Smeltepunkt
1680,15 K | 1407 °C | 2564,6 °F
Kokepunkt
2840,15 K | 2567 °C | 4652,6 °F
Smeltevarme
11,1 kJ/mol
Fordampingsvarme
280 kJ/mol
Spesifikk varmekapasitet
0,17 J/g·K
Abundance in Earth's crust
0,00062%
Abundance in Universe
2×10-7%
CAS Number
7429-91-6
PubChem CID Number
23912
Atom eigenskapar
Atomradius
178 pm
Kovalent radius
192 pm
Elektronegativitet
1,22 (Paulings skala)
Ioniseringspotensial
5,9389 eV
Molart volum
19,0 cm3/mol
Termisk konduktivitet
0,107 W/cm·K
Oksidasjonstrinn
2, 3
Applications
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
Isotopes
Stable Isotopes
156Dy, 158Dy, 160Dy, 161Dy, 162Dy, 163Dy, 164DyUnstable Isotopes
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