Discovered By: Torbjorn Sikkeland, John R. Walton, Albert Ghiorso, Glenn Seaborg
Discovery year: 1958

The following table showing some properties of Nobelium(No):

Table Example
Atomic number 102
Group n/a
Period 7
Block f
Electrons 102
Protons 102
Neutrons 157
Atomic weight (259)
Oxidation states +2, +3
Electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p66 6s^2 4f^14 5d^10 6p^6 7s^2 5f^14


Table Example
Melting point 827°C
Ionic charge No^2+, No^3+
Electros per shell K2 L8 M18 N32 O32 P8 Q2
Electronegativity 1.3
Valence 3
First ionization energy 642 kJ.mol^-1
Radioactive Yes
Half life 1*10^4 s
Lifetime 2*10^4 s
Decay mode Alpha emission (α-decay)