Name : Nobelium Symbol : No Atomic # : 102 Atom weight: 259 (Estimated value) Melting P. : Boiling P. : Oxidation : +2, +3 Pronounced : no-BELL-i-em From : Named in honor of Alfred Nobel Identified : Albert Ghiorso, T. Sikkeland, J.R. Walton, and Glenn T. Seaborg in 1958 Appearance : Radioactive, synthetic metal. Note : None [Properties] Nobelium is the heaviest of the Group VIA elements. It is very near the end of the transuranium portion of the actinide series. It is a transuranium element because it is an element heavier than uranium, and it is an actinide because it belongs to the series of elements between actinium (element 89) and lawrencium (element 103).