Page "Mendelevium" Paragraph 3

Johansson and Rosengren predicted in 1975 that Md would prefer a divalent metallic state, similar to europium ( Eu ) and ytterbium ( Yb ), rather than a trivalent one.

Thermochromatographic studies conducted with trace amounts of Md concluded that Md forms a divalent metal.

With the aid of empirical correlation method, a divalent metallic radius of ( 0. 194 ± 0. 010 ) nm has been estimated.

The estimated enthalpy of sublimation is in the range of 134-142 kJ / mol.