Glenn T. Seaborg

Discovered ten transuranium elements including plutonium and reorganized the periodic table's actinide series.

Core Principles & Analysis

• Co-discovered plutonium in 1941 and nine other transuranium elements.
• Proposed the actinide concept, repositioning the heavy elements below the lanthanides.
• Element 106 (Seaborgium) was named for him while he was still alive.

Specifications & Metrics

• ERA: 1912 – 1999