Discovery of hafnium

Hafnium is a chemical element; it has symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals.

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

Which happened first?

• Discovery of hafnium happened 3 years before Discovery of rhenium
• Discovery of hafnium happened 5 years after Discovery of protactinium
• Discovery of hafnium happened 8 years before Discovery of Pluto
• Discovery of hafnium happened 15 years before Discovery of technetium
• Discovery of hafnium happened 16 years after Discovery of lutetium

Timeline

1. Discovery of lutetium1906
2. Discovery of protactinium1917
3. Discovery of hafnium (this page)1922
4. Discovery of rhenium1925
5. Discovery of PlutoFebruary 18, 1930
6. Discovery of technetium1937

Related

• Discovery of hydrogen1766
• Discovery of oxygen1774
• Discovery of carbon1789
• Discovery of aluminium1825
• Discovery of heliumAugust 18, 1868
• Discovery of nitrogen1772
• Discovery of sulfur1777
• Discovery of lithium1817