Tabla

Electronic ConfigurationXe 6s2 4f10

Melting Point1412°C

Boiling Point2562°C

Density8.55g cm⁻³

Description

Metallic with a bright silvery-white lustre. Dysprosium belongs to the lanthanoids. It is relatively stable in air at room temperatures, it will however dissolve in mineral acids, evolving Hydrogen. It is found in from rare-earth minerals. There are seven natural isotopes of Dysprosium, and eight radioisotopes, ¹⁵⁴Dy being the most stable with a half-life of 3*10^6 years. Dysprosium is used as a neutron absorber in nuclear fission reactions, and in compact disks. It was discovered by Paul Emile Lecoq de Boisbaudran in 1886 in France. Its name comes from the Greek word dysprositos, which means hard to obtain.

Covalent Radius167pm

Double133pm

Ionisation Energies

Oxidation States0, +3

Uses

Its uses are limited to the experimental and esoteric.

Electron Affinity33.963kJ mol⁻¹

Electronegativity1.22PAULING

Atomic Volume19cm³ mol⁻¹

Atomic Radius180pm

Van Der Waals Radius231pm

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.

Discovery

Discovered in 1886 by Paul Émile Lecoq de Boisbaudran in France

Name Origin

Greek: dysprositos (hard to get at).

CAS7429-91-6

Crust Abundance5.2mg kg⁻¹

Sea Abundance9.10x10⁻⁷mg dm⁻³

Enthalpy of Vapourisation 291kJ mol⁻¹

Enthalpy of Formation290.4kJ mol⁻¹

Specific Heat - 20°C0.173J (g ⋅ K)⁻¹

Thermal Conductivity10.7W (m ⋅ K)⁻¹

Isotope	Abundance	Half Life
156Dy	0.056%	-
158Dy	0.095%	-
160Dy	2.329%	-
161Dy	18.89%	-
162Dy	25.48%	-
163Dy	24.9%	-
164Dy	28.26%	-

https://reuben.science

https://github.com/reubn/tabla

Using data from mendeleev.

MIT License Copyright (c) 2020 reubn Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. pb2bb3a9eb2b62a1fdf94