Tiêu đề Structure Of Atom Shobhit Nirwan.pdf ✅

- Thomson 's Model ( Plumpudding Model) o e -0 are uniformly distributed in atom ° atom is neutral ° 0 net 7ve charge on atom - net -0ve charge on e-. ° mass of atom is uniformly distributed . Drawback - e -0 are not stationary they are revolving around nucleus . 311T IT IS Thomson HIEI fall GT tf Rutherford Chacha storytf 3¥ Fg Rutherford's Model §- scattering experiment: - observation: ° Most of Lparticles pass undeflected. g A few particles deflected at some angle. . as Helium Cueey A few ( t out of 2000) deflected at 180? Conclusion : ° Most of the part of atom is vacant. ° Atom has some 4ve charge in it. ° 4 re charge of atom is concentrated in nucleus . o e -0 are revolving around nucleus. o protons + Neutrons = Nucleons Drawback - He could not explain stability of atom . HI Rutherford Chacha 2A fail Ef tht , HI story tf 34K¥ Bohr -914T but Bohr 919T tit model tTHfH FIAT Etf BUT comets tTH£H ETI l # 318ft 419117 tit model hold YT 2244T the conceps HIETT E : - Electromagnetic Radiation ↳ when electrically charged particle moves under acceleration,alternating electrical and magnetic fields are generated and transmitted in form of waves , called electromagnetic waves or electromagnetic radiation FEMA) (L) wave Nature of E. M . R ° According to Maxwell , a accelerated charge particle produce electric and magnetic field. o Ef. and Meg are perpendicular to each other and also I to direction of propagation. o Em . R. do not require any medium and they can travel in vacuum with speed of light ( C= 3×108m/s)