This document is an outline for a chapter on electrons in atoms. It is divided into three main sections: Section 5.1 discusses light and quantized energy, including the wave and particle properties of light and photons. Section 5.2 covers the quantum theory of the atom, comparing the Bohr and quantum mechanical models. It introduces atomic orbitals and quantum numbers. Section 3 discusses electron configuration, including the rules for determining configuration, valence electrons, and representing configurations with diagrams and symbols.

2. Chapter Menu Electrons in Atoms Section 5.1 Light and Quantized Energy Section 5.2 Quantum Theory and the Atom Section 5.3 Electron Configuration Exit Click a hyperlink or folder tab to view the corresponding slides.

4. Section 5-1 Section 5.1 Light and Quantized Energy (cont.) electromagnetic radiation wavelength frequency amplitude electromagnetic spectrum Light, a form of electronic radiation, has characteristics of both a wave and a particle. quantum Planck's constant photoelectric effect photon atomic emission spectrum

9. Section 5-1 The Wave Nature of Light (cont.)

12. Section 5-1 The Wave Nature of Light (cont.)

17. Section 5-1 Atomic Emission Spectra (cont.)

21. End of Section 5-1

23. Section 5-2 Section 5.2 Quantum Theory and the Atom (cont.) ground state quantum number de Broglie equation Heisenberg uncertainty principle Wavelike properties of electrons help relate atomic emission spectra, energy states of atoms, and atomic orbitals. quantum mechanical model of the atom atomic orbital principal quantum number principal energy level energy sublevel

28. Section 5-2 Bohr's Model of the Atom (cont.)

29. Section 5-2 Bohr's Model of the Atom (cont.)

35. Section 5-2 The Quantum Mechanical Model of the Atom (cont.)

41. Section 5-2 Hydrogen Atomic Orbitals (cont.)

44. End of Section 5-2

46. Section 5-3 Section 5.3 Electron Configuration (cont.) electron configuration aufbau principle Pauli exclusion principle Hund's rule valence electrons electron-dot structure A set of three rules determines the arrangement in an atom.

48. Section 5-3 Ground-State Electron Configuration (cont.)

50. Section 5-3 Ground-State Electron Configuration (cont.)

54. Section 5-3 Valence Electrons (cont.)

57. End of Section 5-3

58. Resources Menu Chemistry Online Study Guide Chapter Assessment Standardized Test Practice Image Bank Concepts in Motion

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96. CIM Figure 5.11 Balmer Series Figure 5.12 Electron Transitions Table 5.4 Electron Configurations and Orbital Diagrams for Elements 1–10 Table 5.6 Electron Configurations and Dot Structures

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