Elements timeline

Main

Phosphorus

1669

Nitrogen

1772

Barium

1772

Titanim

1789

Zirconium

1791

Vanadium

1801

Palladium

1803

Sodium

1807

Calcium

1808

Boron

1808

Lithium

1817

Silicon

1824

Caesium

1860

Helium

1868

Scadium

1879

Fluorine

1886

Germanium

1886

Krypton

1898

Plutonium

1940 - 1941

Hassium

1984