Untitled timeline

Main

phosphorus

1669

makes some toys glow

platinum

1700

nickle

1751

hydrogen

1766

oxygen

1774

uranium

1789

potasium

1807

sodium

1807

iodine

1811

silicon

1824

aluminum

1825

indium

1863

fluorine

1886

argon

1894

helium

1895

protactinium

1917

hafnium

1923

plutonium

1940

americium

1944

ununnilium

1944

lawrencium

1961

dubnium

1970

meitnerium

1982

radon

1990

dubnium

1996

ununbium

1996

radioactive