Discovery of thallium

Thallium is a chemical element; it has symbol Tl and atomic number 81. It is a silvery-white post-transition metal that is not found free in nature. When isolated, thallium resembles tin, but discolors when exposed to air.

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

Which happened first?

• Discovery of thallium and Discovery of rubidium happened in the same year
• Discovery of thallium happened 1 year after Discovery of caesium
• Discovery of thallium happened 2 years before Discovery of indium
• Discovery of thallium happened 7 years before Discovery of helium
• Discovery of thallium happened 14 years before Discovery of gallium

Timeline

1. Discovery of caesium1860
2. Discovery of rubidium1861
3. Discovery of thallium (this page)1861
4. Discovery of indium1863
5. Discovery of heliumAugust 18, 1868
6. Discovery of gallium1875

Related

• Discovery of hydrogen1766
• Discovery of oxygen1774
• Discovery of PlutoFebruary 18, 1930
• Discovery of carbon1789
• Discovery of aluminium1825
• Discovery of nitrogen1772
• Discovery of sulfur1777
• Discovery of lithium1817