Transcript INTRODUCTION

INTRODUCTION
• K.BHANUPRAKASH
• S.A.(PHYSICALSCIENCES)
• Z.P.H.S. KANGUNDI
BASIC PARTICLES IN ATOM
THOMSON WATER-MELON
THEORY
THE NUMBER OF
NEGATIVELY
CHARGED
ELECTRONS IS
EQUAL TO
POSITIVELY
CHARGED
PROTONS
DEMERITS OF THOMSON
MODEL
• OPPOSITE
CHARGES
ATTRACTIONS
DESTROY THE
ATOM.
+
_
RUTHERFORD THEORY
• RUTHERFORD
PROPOSED HIS
THEORY BY GOLDFOIL ALPHASCATTERING
EXPERIMENT.
GOLD-FOIL ALPHA-SCATTERING
EXPERIMENT.
• THIS EXPERIMENT
DESCRIBES ONLY
ONE OR TWO αRAYS RETURNED
OR REFLECTED
OUT OF 20,000
RAYS AND
REMAINING
PASSED TOWARDS
THE GOLD-FOIL.
RUTHER FORD ATOMIC THEORY
• THOUGH 1 OR 2 αRAYS 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.
EXPLANATION OF GOLD FOIL
EXPERIMENT
DEMERITS OF RUTHERFORD
THEORY
BOHR’S THEORY
BOHR’S THEORY
BOHR’S THEORY
BOHR’S THEORY
bohr
BOHR
SHAPE OF 1S ORBITAL
Shape of 2s orbital
SHAPES OF P ORBITALS
SHAPES OF d ORBITALS
ELECTRONIC CONFIGURATION
• MOELLER MAP
• nlX METHOD
MOELLER MAP
.
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
ACKNOWLEDGEMENTS
• IX & X CLASS ACADAMIC TEXT BOOKS
• MS ENCARTA
• www.sciencejoywagon.com/physicszone/lesson/
10modern/atomodel/ruther.htmhttp://fp.academi
c.venturacollege.edu/doliver/chem1a/animateor
bitals
• http://www.google.com/animations+of+shapes+
of+orbitals&btnG
• THIS PROJECT IS ENTIRELY FOR
EDUCATION PURPOSE