Sir William Ramasay Period (28 dic 1894 año – 8 mar 1898 año)
Descripción:
This is when Sir William Ramsay was reaserching the atomic elements known as the noble gases which is now a new family of elements.
Añadido al timeline:
Atomic Theory Timeline
This is scientists that came up with some of the 'Atomic The...
fecha:
Fotos: