Dysprosium

Dysprosium
 * ** Atomic number ** || 66 ||
 * ** Atomic mass ** || 162.50 g.mol -1 ||
 * ** Electronegativity according to Pauling ** || 1.2 ||
 * ** Density ** || 8.6 g.cm -3 at 20°C ||
 * ** Melting point ** || 1412 °C ||
 * ** Boiling point ** || 2562 °C ||
 * ** Vanderwaals radius ** || unknown ||
 * ** Ionic radius ** || unknown ||
 * ** Isotopes ** || 12 ||
 * ** Electronic shell ** || [ Xe ] 4f 10 6s 2 ||
 * ** Energy of first ionisation ** || 571.2 kJ.mol -1 ||
 * ** Energy of second ionisation ** || 1124 kJ.mol -1 ||
 * ** Standard potential ** || - 2.35 V ||
 * ** Discovered by ** || Paul Emile Lecoq de Boisbaudran in 1886 ||