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Quantum number

Chapter 8

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Chemistry 1210: Introduction to General Chemistry Dr. Gina M. Florio 05 November 2012 Jespersen, Brady & Hyslop Chapter 8 The Quantum Mechanical Atom Quantum Mechanics Ch. 8.1 The physics that describes objects with wave-particle duality is called quantum mechanics or quantum theory. In the late 1800?s, scientists discovered that electrons acted like tiny charged particles in some experiments and waves in others. Quantum mechanics accurately describes the structure and reactivity of atoms and molecules. Electromagnetic Radiation Ch. 8.1 Energy can be transferred as heat or as light. Electromagnetic radiation can be carried energy through space in the form of electromagnetic waves.

Bob Jones PPT Notes -- Chapter 4b

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The Electron Structure of the Atom The quantum model emphasizes the wave nature of electrons. The Quantum Model Quantum numbers are solutions to the wave equations of electrons. Scientists use a set of 4 quantum numbers to determine an electron?s location around an atom. Quantum Numbers Electrons exist in principal energy levels that correspond to Bohr?s orbits: 1, 2, 3, 4, 5, ? Principal energy levels are divided into 4 types of sublevels: s, p, d, and f. Where are the Electrons? The sublevels contain orbitals. Each orbital can hold up to two electrons. Where are the Electrons? Identifies the principal energy level Correlates to Bohr?s orbits n = 1, 2, 3, 4, 5, 6, or 7 for the ground state e?. The total number of e? in a level is 2n2. Principal Quantum Number (n) Level Total # e? 1

Chapter 8 Test Banks

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? Chemistry: A Molecular Approach (Tro) ? Chapter 8 ?? Periodic Properties of the Elements ? 1) ?? Give the ground state electron configuration for Se. ? A) ?? [Ar]4s23d104p4 ? B) ?? [Ar]4s24d104p4 ? C) ?? [Ar]4s23d104p6 ? D) ?? [Ar]4s23d10 ? E) ?? [Ar]3d104p4 ? Answer: ?? A ? 2) ?? Give the ground state electron configuration for I. ? A) ?? [Kr]5s24d105p6 ? B) ?? [Kr]5s24d105p5 ? C) ?? [Kr]4d105p6 ? D) ?? [Kr]5s25p6 ? E) ?? [Kr]5s25d105p6 ? Answer: ?? B ? 3) ?? Give the ground state electron configuration for Sr. ? A) ?? [Kr]5s24d2 ? B) ?? [Kr]5s24d105p2 ? C) ?? [Kr]5s2 ? D) ?? [Kr]5s25d105p2 ? E) ?? [Kr]5s24d10 ? Answer: ?? C ? 4) ?? Give the ground state electron configuration for Pb. ? A) ?? [Xe]6s26p2 ? B) ?? [Xe]6s25d106p2 ? C) ?? [Xe]6s25f146d106p2 ? D) ??
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