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INTRODUCTION

INTRODUCTION. K.BHANUPRAKASH S.A .(PHYSICALSCIENCES) Z.P.H.S. KANGUNDI. ATOMIC STRUCTURE. BASIC PARTICLES IN ATOM. THOMSON WATER-MELON THEORY. THE NUMBER OF NEGATIVELY CHARGED ELECTRONS IS EQUAL TO POSITIVELY CHARGED PROTONS. DEMERITS OF THOMSON MODEL.

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INTRODUCTION

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  1. INTRODUCTION K.BHANUPRAKASH S.A.(PHYSICALSCIENCES) Z.P.H.S. KANGUNDI ATOMIC STRUCTURE

  2. BASIC PARTICLES IN ATOM

  3. THOMSON WATER-MELON THEORY THE NUMBER OF NEGATIVELY CHARGED ELECTRONS IS EQUAL TO POSITIVELY CHARGED PROTONS

  4. DEMERITS OF THOMSON MODEL • OPPOSITE CHARGES ATTRACTIONS DESTROY THE ATOM. _ +

  5. RUTHERFORD THEORY • RUTHERFORD PROPOSED HIS THEORY BY GOLD-FOIL ALPHA-SCATTERING EXPERIMENT.

  6. GOLD-FOIL ALPHA-SCATTERING EXPERIMENT. • THIS EXPERIMENT DESCRIBES ONLY ONE OR TWO α-RAYS RETURNED OR REFLECTED OUT OF 20,000 RAYS AND REMAINING PASSED TOWARDS THE GOLD-FOIL.

  7. RUTHER FORD ATOMIC THEORY • THOUGH 1 OR 2 α-RAYS ARE RETURNED ALL THE POSITIVE OF CHARGE OF ATOM IS BINDED AT CENTRE OF THE ATOM. IT MEANS PROTONS AND NUTRONS ARE CLOSELY PACKED AT CENTRE OF ATOM.

  8. EXPLANATION OF GOLD FOIL EXPERIMENT

  9. DEMERITS OF RUTHERFORD THEORY nucleas electron

  10. BOHR’S THEORY

  11. BOHR’S THEORY

  12. BOHR’S THEORY

  13. BOHR’S THEORY

  14. bohr electron nucleas

  15. BOHR

  16. SHAPE OF 1S ORBITAL

  17. Shape of 2s orbital

  18. SHAPES OF P ORBITALS

  19. SHAPES OF d ORBITALS

  20. ELECTRONIC CONFIGURATION • MOELLER MAP • nlX METHOD

  21. MOELLERMAP 1s 2p 2s . 3d 3p 3s 4f 4d 4s 4p 5f 5p 5d 5s 6d 6s 6p 7s 7p < 2s < 2p < < 3p < 1s 3s 8s 4s < 3d < 4p < 5s < 5p 4d < 6s < 4f < < < < 5f 5d 6p 7s

  22. nlX METHOD • n -prime quantum number n=1,2,3,4,…….. • l - azimuthal quantum number l=s,p,d,f,…….. • X- no. of electrons x=1 to 14

  23. 1 2 x l n 1 s s 1 n

  24. ACKNOWLEDGEMENTS • IX & X CLASS ACADAMIC TEXT BOOKS • MS ENCARTA • www.sciencejoywagon.com/physicszone/lesson/10modern/atomodel/ruther.htmhttp://fp.academic.venturacollege.edu/doliver/chem1a/animateorbitals • http://www.google.com/animations+of+shapes+of+orbitals&btnG • THIS PROJECT IS ENTIRELY FOR EDUCATION PURPOSE

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