'Logically, it was the radioactive transuranium metal discovered right after neptunium'
plutonium
METALS: Logically, it was the radioactive transuranium metal discovered right after neptunium
Logically, it was the radioactive transuranium metal discovered right after neptunium
Logically, it was the radioactive transuranium metal discovered right after neptunium
METALS
plutonium
METALS