29
/it/
it
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
Creare
Public Timelines
Biblioteca
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
Scaricare
Export
Creare una copia
Integrare nel sito Web
Modificare
Visualizzazioni 257
0
0
Atomic model timeline
è stata creata
Archie
⟶ è stato aggiornato 26 ott 2017 ⟶
List of edits
Commenti
Eventi
UNIVERSE DIES
1869 Dimitri Medeleev created the periodic table
1896 Henri Becquerel discovered radiation
1897 J.J.Thomson Determined the charge to mass ratio of electrons
1898 Rutherford Discovered alpha, beta and gamma rays in radiation.
1900 Frederik Soddy used the term ISOTOPE to explain the unintentionel breakdown of radioactive elements
1906 Hans Geiger Invented a device that could detect and measure alpha particles in an area
1922 Niels Bohr proposed an atomic model that stated the outer orbit of the atom could hold more electrons than the inner shells
1932 James Chadwick Using alpha particles discovered a neutral atomic particle with a mass close to a proton. From this experiment he discovered the neutron