Discovery of thorium

Thorium is a chemical element; it has symbol Th and atomic number 90. Thorium is a weakly radioactive light silver metal which tarnishes olive grey when it is exposed to air, forming thorium dioxide; it is moderately soft, malleable, and has a high melting point.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Which happened first?

• Discovery of thorium happened 3 years after Discovery of aluminium
• Discovery of thorium happened 3 years after Discovery of bromine
• Discovery of thorium happened 5 years after Discovery of silicon
• Discovery of thorium happened 11 years after Discovery of cadmium
• Discovery of thorium happened 11 years before Discovery of lanthanum

Timeline

1. Discovery of cadmium1817
2. Discovery of silicon1823
3. Discovery of aluminium1825
4. Discovery of bromine1825
5. Discovery of thorium (this page)1828
6. Discovery of lanthanumJanuary 1839

Related

• Discovery of hydrogen1766
• Discovery of oxygen1774
• Discovery of PlutoFebruary 18, 1930
• Discovery of carbon1789
• Discovery of heliumAugust 18, 1868
• Discovery of nitrogen1772
• Discovery of sulfur1777
• Discovery of lithium1817