elements timeline

Events

arsenic was discovered

1649

phosporus was discovered

1669

colbalt was discovered

1735

hydrogen was discovered

1766

chlorine was discovered

1774

tungsten was discovered

1783

uranium was discovered

1789

boron was discovered

1808

calcium was discovered

1808

bromine was discovered

1826

aluminion was discovered

1828

helium was discovered

1895

radium was discovered

1898

rhenium was discovered

1925

einsteinium was discovered

1952

hafnium was discovered

1970