EnvironmentalChemistry. com: Mendelevium Atomic structure , chemical and physical properties , and table of nuclides. environmentalchemistry.com/yogi/periodic/Md.html
It's Elemental: Mendelevium Basic physical and historical information. education.jlab.org/itselemental/ele101.html
Lenntech: Mendelevium Physical data and chemical properties. www.lenntech.com/Periodic-chart-elements/Md-en.htm