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Name: Dysprosium Symbol: Dy
Group: Rare Earth, Lanthanides Atomic weight: 162.50
Density @ 293 K: 8.536 g/cm3 Atomic volume: 19.0 cm3/mol
Group: Rare Earth, Lanthanides discovered: 1886


state (s, l, g): s
melting point: 1682.2 K boiling point: 2873 K
Heat of fusion: 11.060 kJ/mol Heat of vaporization: 230.0 kJ/mol


1st ionization energy: 571.9 kJ/mole
electronegativity: 1.2 2nd ionization energy: 1126 kJ/mole
electron affinity: 50 kJ/mole 3rd ionization energy: 2200 kJ/mole
Specific heat: 0.17 J/gK heat atomization: 291 kJ/mole atoms

Oxidation & Electrons:

Shells: 2,8,18,28,8,2 electron configuration: [Xe] 4f10 6s2
minimum oxidation number: 0 maximum oxidation number: 3
min. common oxidation no.: 0 max. common oxidation no.: 3

Appearance & Characteristics:

structure: hcp: hexagonal close pkd color: silvery-white
uses: alloys, CD disk toxicity:
hardness: mohs characteristics: neutron absorber


reaction with air: vigorous, =>Dy2O3
reaction with 6M HCl: mild, =>H2, DyCl3 reaction with 6M HCl: mild, =>H2, DyCl3
reaction with 15M HNO3: mild, =>Dy(NO3)3 reaction with 6M NaOH:

Other Forms:

number of isotopes: 7 hydride(s): DyH2 DyH3
oxide(s): Dy2O3 chloride(s): DyCl2 DyCl3


ionic radius (2- ion): pm ionic radius (1- ion): pm
atomic radius: 178 pm ionic radius (1+ ion): pm
ionic radius (2+ ion): 121 pm ionic radius (3+ ion): 105.2 pm


thermal conductivity: 10.7 J/m-sec-deg
electrical conductivity: 10 1/mohm-cm polarizability: 24.5 A^3


source: Monazite(phosphate),bastnaesite
rel. abund. solar system: -0.404 log abundance earth's crust: 0.5 log
cost, pure: 210 $/100g cost, bulk: $/100g