Periodic Table of the Elements
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Bottom FACULTY OF CHEMICAL TECHNOLOGY o PERIODIC TABLE OF THE ELEMENTS Bottom
  A B C D E F G H I J K L M N O P R S T U V X Z  
Periodic Table of the Elements Tableau périodique des éléments Periodni sustav elemenata Tavola periodica degli elementi Das Periodensystem der Elemente
Dysprosium Dysprosium Disprozij Disprosio Dysprosium

 
Atomic number: 66
Group numbers: 3
Period: 6
 
Discovery date: 1886
Dy

Dysprosium
NEIGHBOURS

 
 
 
65
Tb
 66
Dy
 67
Ho
97
Bk
 98
Cf
 99
Es


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Dysprosium was discovered by Paul Emile Lecoq de Boisbaudran (France) in 1886. The origin of the name comes from the Greek word dysprositos meaning hard to obtain. It is soft, lustrous, silvery metal. Reacts with oxygen. Reacts rapidly with water; dissolves in acids. Metal ignites and burns readily. Reductant.
Bottom TRANSITION ELEMENT: LANTHANIDE Top

Relative atomic mass: 162.50(3) Electronic configuration: [Xe] 4f10 6s2
Formal oxidation number: +3 Electronegativities: 1.22
Thermal conductivity: 10.7 W m-1 K-1 Electrical resistivity (20 °C): 57 μΩcm
Atomic radius: 175.2 pm Standard state (20 °C): solid
Density (g dm-3): 8550 (293 K) Molar volume (cm3 mol-1): 19.01 (293 K)


Bottom THERMAL PROPERTIES Top

Melting point: 1412 °C Heat of fusion: 17.2 kJ mol-1
Boiling point: 2567 °C Heat of vaporization: 293 kJ mol-1
Critical temperature: 7367 °C Heat of atomization: 293.05 kJ mol-1


Bottom IONIZATION ENERGIES AND ABUNDANCE Top

1st ionization energy: 573.02 kJ mol-1 Abundance of element (air): - ppm
2nd ionization energy: 1125.99 kJ mol-1 Abundance of element (Earth's crust): 3.6 ppm
3rd ionization energy: 2199.88 kJ mol-1 Abundance of element (oceans): 0.0000002 ppm


Bottom ISOTOPES Top

Isotopes Relative atomic mass Abundance (%)
156Dy155.924278(7)0.06(1)
158Dy157.924405(4)0.10(1)
160Dy159.925194(3)2.34(6)
161Dy160.926930(3)18.9(2)
162Dy161.926795(3)25.5(2)
163Dy162.928728(3)24.9(2)
164Dy163.929171(3)28.2(2)


Bottom MINERALS AND USES Top

Dysprosium usually found with erbium, holmium and other rare earths in some minerals such as monazite sand. Dysprosium uses are limited to the experimental and esoteric. Some isotopes of dysprosium are effective absorbers of thermal neutrons and are being considered for use in the control rods in nuclear reactors. The price of 99.9 % pure dysprosium ingot is 201.10 € for 100 g.

Bottom REDUCTION POTENTIALS Top

Balanced half-reaction   Eo / V      Annotation

 

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