CBSE Class 12/Class 11/Class 9 - DISCOVERIES IN ATOMIC STRUCTURE (#eduvictors)(#cbsenotes)

DISCOVERIES IN ATOMIC STRUCTURE

1. Dalton(1803) : Proposed Atomic Theory

2. Julius Plucker (1859) : First discoverer of cathode rays

3. Goldstein(1886) : Discovered anode rays and proton

4. Sir.J.J.Thomson(1897) : Discovered electron and determined charge/mass(e/m) ratio for electron

5. Rutherford(1891) : Discovered nucleus and proposed atomic model



6. MaxPlanck(1901) : Proposed quantum theory of radiation

7. RobertMillikan(1909) : Determined charge of an electron

8. H.G.J.Mosely(1913) : Discovered atomic number

9. Niels Bohr(1913) : Proposed a new model of atom

10. Clark Maxwell(1921) : Electromagnetic wave theory

11. de-Broglie(1923) : Established wave nature of particles

12. Pauli(1927) : Discovery of neutrino

13. Werner Heisenberg(1927) : Uncertainty Principle

14. Paul Diac : Proposed anti-particles

15. James Chadwick(1932) : Discovery of neutron

16. Anderson(1932) : Discovery of positron

17. Fermi(1934) : Discovered antineutrino

18. Hideki Yukawa(1935) : Discovered mesons

19. Segre(1955) : Discovered antiproton

20. Cork et al.(1956) : Discovered antineutron

21. Peter Higgs et al.(1964): Proposed standard model and boson.

22. LHC Grid 34 countries(2012): Discovered Higgs boson (The God Particle)