5-1 MODELS OF THE ATOM KEY CONCEPTS 1.What was inadequate about Rutherford’s atomic model? 2.What was the new proposal in the Bohr model of the atom? 3.What.

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Presentation transcript:

5-1 MODELS OF THE ATOM KEY CONCEPTS 1.What was inadequate about Rutherford’s atomic model? 2.What was the new proposal in the Bohr model of the atom? 3.What does the quantum mechanical model determine about the electrons in an atom? 4.How do sublevels of principal energy levels differ? MAIN IDEAS 1. Energy Levels 2. Quantum 3. Quantum Mechanical Model 4. Atomic Orbital Believe deep down in your heart that you’re destined to do great things. - Joe Paterno IaN pg. 11

THE HIGHLIGHTS I. THE DEVELOPMENT OF ATOMIC MODELS A.RUTHERFORD MODEL CHEMICAL PROPERTIES 1. BETTER EXPLANATION OF ELECTRON BEHAVIOR NEEDED

II.THE BOHR MODEL A. STUDENT OF RUTHERFORD IMPROVED MODEL B. ELECTRON FOUND IN ORBITS 1. Energy Levels = Fixed Energy Of Electron Orbit

C. QUANTUM = ENERGY REQUIRED TO MOVE AN ELECTRON BETWEEN ENERGY LEVELS D.Energy between levels is not equal 1. Higher Levels closer together therefore less energy required to move an electron. E. Model worked w/ Hydrogen but not with atoms w/ more than one electron. Quantum Leap

III.THE QUANTUM MECHANICAL MODEL A. Erwin Schrodinger Uses Mathematical Equations To Describe Electrons B. Electrons Not In Specific Paths 1. Equation determines Energy w/ probability of electron location

IV.ATOMIC ORBITALS A. Region W/ High Probability Of Electron Location B. Energy levels have a value of n (n=1, n=2 etc.) 1. Sublevels w/in levels w/ different shapes and/or energy levels.

V.Sublevels of Energy Levels A. S Orbitals = spherical shape B. P Orbitals = dumbbell shape

C. D Orbitals = 4 clover shapes & 1 dumbbell w/ a ring 1. Number & kinds of atomic orbitals depend on energy sublevels.

Nucleus Number = energy level Letter = orbital shape Subscript letter = 3D axis location Examples: 3p x 3p y 3p z

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