Elements
66

Dy

Dysprosium

Dysprosium (Dy) is a silvery coloured metal that has the atomic number 66 in the periodic table. It is a Lanthanide metal. It has the symbol Dy.

Dysprosium is one of the 15 rare earth elements and was discovered in 1886 but was not available commercially till 1950. Through the discovery of the mineral Yttria in Sweden (a mineral made of 9 different elements) it took many years to separate them all out. It was not until 1886 when French chemist Paul-Emile Lecoq de Boisbaudran was able to separate it out. Dysprosium is relatively unreactive and does not oxidise easily and it does not exist naturally in the earths crust. Dysprosium is used in nuclear reactions due to its ability to soak up neutrons. It is a solid metal at room temperature with a melting point of 1407°c and a boiling point of 2567°c.

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FAQ's

What is the Melting Point for Dysprosium?

Dysprosium has a Melting Point of 1412°F, meaning at 1412°F it will turn to a liquid.

What is the Boiling Point for Dysprosium?

Dysprosium has a Boiling Point of 2567°F, meaning at 2567°F it will turn to a Gas.

What is the Electronegativity of Dysprosium?

Dysprosium's Electronegativty is 1.22. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

What is the Heat of Vaporization of Dysprosium?

Dysprosium has a Heat of Vaporization of 230 kJ/mol.

Uses

Its uses are limited to the experimental and esoteric.

Sources

Usually found with erbium, holmium and other rare earths in some minerals such as monazite sand, which is often 50% rare earth by weight.

66
Protons
66
Electrons
97
Neutrons

Dy

Element Symbol
Dy
Atomic Weight
162.5
Atomic Number
66
State
Solid
Melting Point
Unknown
1412
°C
Boiling Point
2567
Unknown
°C
Heat of Vaporization
230
Unknown
kJ/mol
Crystal Structure
Hexagonal
Thermoconductivity
0.107
Unknown
W/cmK
Shells
2,8,18,28,8,2
Group
Lanthanide
Period
6
Block
F Block
Orbitals
[Xe] 4f10 6s2
Coefficient of Thermal Expansion
9.6 10^-6 K^-1
Covalent Radius
1.59 Å
Density at 293K
8.536 g/cm³
Electrical Conductivity
0.0108 10^6/cm ohm
First Ionization Potential
5.9389 V
Second Ionization Potential
11.67 V
Third Ionization Potential
22.802 V
Ionic Radius
1.03 (+3) Å
Oxydation States
3
Lattice Parameter
3.5904 Å
Lattice Parameter 2
--
Lattice Parameter 3
5.5548 Å
Pronounced

dis-PRO-si-em

Discovered by

Paul Émile Lecoq de Boisbaudran

Discovery date

1886

Orbital configuration
2,8,18,28,8,2

Download the Periodic Table

Explore Other Lanthanides

140.116
58

Ce

Cerium
158.925
65

Tb

Terbium
145
61

Pm

Promethium
174.967
71

Lu

Lutetium
164.93
67

Ho

Holmium
157.25
64

Gd

Gadolinium
173.045
70

Yb

Ytterbium
168.934
69

Tm

Thulium
144.24
60

Nd

Neodymium
140.908
59

Pr

Praseodymium
167.259
68

Er

Erbium
151.964
63

Eu

Europium
150.36
62

Sm

Samarium
138.905
57

La

Lanthanum
The lanthanide series contains 15 metallic elements from number 57 (lanthanum) to 71 (lutetium). They are located in group 3 and in the f-block of period six in the periodic table.
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Terbium

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Holmium

67