Atomic structure

Atomic structure

1. Discovery Of Electron: CRT Experiment

   • CR Travel in a straight line
     • Solid object placed in front forms a shadow
   • Made up of material particles
     • Paddle placed in front of car starts rotating
   • Consist of negatively charged particles
     • Via Miliken's Oil drop exp
   • Produce heating effect
   • Produce x Rays
   • Ionise the gas which they pass
   • Affect the photographic plate(fogging)
   • When striking a glass surface rom flourescence

2. Mass of Electron

   • 9.1x 10e-31Kg

3. Mass of electron relative to hydrogen

   • Mass of h atom / mass of electron = 1.67x10e-24 / 9.1 x 10e-28 =1.835x10e3 = 1835