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KOLEJ KEMAHIRAN TINGGI MARA BERANANG PHYSICS 1/DFE1052 TOPIC: ingredientIC TEORI OF weigh 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 reassure 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 substitute TO authentic RANGE.THIS IS BECAUSE THE valence ELECTRONS OF AN ATOM ar INFLUENCED BY THE FORCES FROM THE neighboring ATOMS.SO, THE goose egg LEVELS OF A SOLID MATTER ARE show IN TERMS OF ENERGY traffic circleS. THE ENERGY circleS SHOWN ARE TH E SIMPLIFIED MODEL.THE ACTUAL ENERGY hatfulS ARE such(prenominal) more than COMPLICATED. there 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 may JUMP TO THE conductivity BAND IF THEY RECEIVE ENOUGH EXTERNAL ENERGY. 3.3.2 CONDUCTION BAND. FOR veritable MATTER SUCH A S METAL,THE VALENCE ELECTRONS ARE NO! T 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 plain ELECTRONS.THESE ELECTRONS ARE KNOWN AS THE CONDUCTING ELECTRONS AND THE ENERGY RANGE THAT be possessed of IS REPRESENTED BY THE CONDUCTION BAND.ALL ELECTRONS IN THE CONDUCTION BAND ARE FREE ELECTRONS. 3.3.3 FORBIDDEN land GAP. FORBIDDEN sphere SEPERATES THE CONDUCTION BAND FROM THE...If you want to get a function essay, order it on our website: OrderEssay.net

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