Thorium was discovered by Jons Jakob Berzelius.
Thorium was discovered in 1829 by Jons Jakob Berzelius.
Thorium was discovered in Sweden by Jons Jakob Berzelius in 1829.
Thorium was discovered by Jons Jakob Berzelius in 1828.
Jöns Jakob Berzelius in 1828.
Thorium, discovered in 1828 by Jons Berzelius
Thorium is a natural chemical element.
Thorium was discovered by Jons Jakob Berzelius in 1828.
Thorium is a natural chemical element, a radioactive metal.
Thorium is a natural, radioactive, chemical element; chemically, thorium is homogeneous.
Thorium is a natural chemical element.
Thorium has 90 electrons.
Thorium is a chemical element not so reactive.
Thorium is a member of actinoids family.