Electronic data		Thermal data		Steric data
Shells: 2,8,18,28,8,2 Orbitals: [Xe] 4f10 6s2 Electronegativity: 1.1, -- 1. Ionization potential: 5.9389 eV 2. Ionization potential: 11.67 eV 3. Ionization potential: 22.802 eV Oxidation states: 3 Electrical conductivity: 0.0108 10^6		Melting point: 1412 °C Boiling point: 2567 °C Specific heat: 0.17 J/gK Heat of fusion: 11.060 kJ/mol Heat of vaporization: 230.0 kJ/mol Thermal conductivity: 0.107 W/cmK		Atomic radius: 2.49 Å Ionic radius: 1.03 Å () Covalent radius: 1.59 Å Atomic volume: 19.0 cm³/mol Density (293 K): 8.536 g/cm³ Crystal structure: Hexagonal

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
154Dy	0	153.924	0	3E06y		View
156Dy	0.052	155.924	0	--	stable	--
157Dy	0	157	3/2	8.1h	EC	View
158Dy	0.09	157.924	0	--	stable	--
159Dy	0	159	3/2	144.4d	EC	View
160Dy	2.29	159.925	0	--	stable	--
161Dy	18.88	160.927	5/2	--	stable	--
162Dy	25.53	161.927	0	--	stable	--
163Dy	24.97	162.929	5/2	--	stable	--
164Dy	28.18	163.929	0	--	stable	--
165Dy	0	165	7/2	2.33h	-	View
166Dy	0	166	0	3.40d	-	View

Legend

Name origin:	Greek: dysprositos (hard to get at).
Description:	Soft, lustrous, silvery metal.
Discovered by:	Paul Émile Lecoq de Boisbaudran
Year:	1886
Place:	France
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.
Use(s):	Its uses are limited to the experimental and esoteric.