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Download Electronic Structure and the Periodic Table A. Bohr Model of the
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Transcript
Electronic Structure and the Periodic Table A. Bohr Model of the Atom 1. Solar System Model 2. Created to Fit a “Quantized” Picture of Energy Transfer 3. Basis: Noncontinuous Emission Spectra of the Elements 4. Basic Postulates a. Electrons reside in certain allowed energy states b. Energy absorption and emission by atoms is caused by electrons “jumping” between energy states. B. Quantum Model (Quantum Mechanics) 1. No Specific Orbits or Paths 2. Mathematical Description of Where the Electrons Are 3. Electrons Reside in Principal Energy Levels Level 1 (K) 2 (L) 3 (M) 4 (N) 5 (O) 6 (P) 7 (Q) Theoretical Number Actual Number of Electrons of Electrons 2 8 18 32 50 72 98 2 8 18 32 32 18 8 4. Electron Configuration - The most probable and most stable arrangement of electrons in an atom. Core and Valence Electrons Shapes of Atomic Orbitals
