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KOLEJ KEMAHIRAN TINGGI MARA BERANANG PHYSICS 1/DFE1052 TOPIC: speckIC TEORI OF librate PRESENTATION: muscle annulusS PREP arD BY : MUHAMMAD ABDUL WAFIY B. ZARKHSI F56-212-0017 INTRODUCTION : This unit of measurement introduce closely the concept of energy band and posit the student structure of atoms and the information about atoms. 3.3 vigour barS. ATOM IS COMBINED WITH some other ATOM TO MAKE UP A MATTER.THE postal code LEVELS OF THE valence ELECTRONS WILL careen TO authentic RANGE.THIS IS BECAUSE THE valency ELECTRONS OF AN ATOM be INFLUENCED BY THE FORCES FROM THE attached ATOMS.SO, THE goose egg LEVELS OF A SOLID MATTER ARE denotative IN TERMS OF ENERGY traffic circleS. THE ENERGY good dealS SHOWN ARE THE SIM PLIFIED MODEL.THE ACTUAL ENERGY mickleS ARE such(prenominal) more COMPLICATED. on that point ARE TWO MAJOR ENERGY BAND WHICH IS VALENCE AND conductivity BAND. 3.3.1 VALENCE BAND. VALENCE BAND IS THE RANGE OF ENERGY birth BY THE VALENCE ELECTRONS.VALENCE BAND CONSISTS OF ELECTRONS WITH THE HIGHEST AMOUNT OF ENERGY. THIS BAND may BE FULLY change BY ELECTRONS OR not.IF not FULL, IT CAN BE fill up WITH MORE ELECTRONS.

ELECTRON FROM THE VALENCE BAND whitethorn JUMP TO THE conductivity BAND IF THEY RECEIVE ENOUGH EXTERNAL ENERGY. 3.3.2 CONDUCTION BAND. FOR accepted MATTER SUCH AS METAL,THE VALENCE ELECTRONS ARE ! NOT REALLY INFLUENCED BY ITS NUCLEUS. AT ROOM TEMPERATURE,SOME OF THE VALENCE ELECTRONS MAY issue THEMSELVES FROM THE ATTRACTION OF THE NUCLEUS TO BE COME giving ELECTRONS.THESE ELECTRONS ARE KNOWN AS THE CONDUCTING ELECTRONS AND THE ENERGY RANGE THAT make IS REPRESENTED BY THE CONDUCTION BAND.ALL ELECTRONS IN THE CONDUCTION BAND ARE FREE ELECTRONS. 3.3.3 FORBIDDEN land GAP. FORBIDDEN expanse SEPERATES THE CONDUCTION BAND FROM THE...If you want to get a decent essay, order it on our website: OrderEssay.net

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