Curium Curium (Cm) Symbol Cm Atomic Number 96 Atomic Mass (247) g.mol -1 Discovered by G.T. Seaborg in 1944 Group... View Article
Thorium Thorium Symbol Th Atomic Number 90 Atomic Mass 232.038 g.mol −1 Discovered by Jöns Jacob Berzelius in 1829 What is... View Article
Seaborgium Seaborgium Symbol Sg Atomic Number 106 Atomic Mass 269 g.mol -1 Discovered by It was discovered by Albert Ghiorso and named it... View Article
Radium Radium Symbol Ra Atomic Number 88 Atomic Mass 226 g.mol −1 Discovered by Marie Sklodowska Curie and Perre Curie in 1898... View Article
Actinium Actinium Symbol Ac Atomic Number 89 Atomic Mass 227 g mol -1 Discovered by Andre Debierne in 1899 Element... View Article
