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Electronic Structure and Periodic Properties

Electronic Structure and Periodic Properties. Electron Configuration Orbital Size Effective Nuclear Charge. Shells, Subshells , Orbitals. Organization of the Periodic Table. Effective Nuclear Charger. Z* = Z eff = Z – S Shielding: electrons with greater n = 0

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Electronic Structure and Periodic Properties

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  1. Electronic Structure and Periodic Properties Electron Configuration Orbital Size Effective Nuclear Charge

  2. Shells, Subshells, Orbitals

  3. Organization of the Periodic Table

  4. Effective Nuclear Charger Z* = Zeff = Z – S Shielding: electrons with greater n = 0 electrons with same n = 0.35 (except d and f, =1) electrons with n one lower, = 0.85 (except d and f, =1) electrons with n two or more lower = 1 P = 1s2 2s2 2p6 3s2 3p3 shielding = 2x1 8 x 0.85 4x0.35 = 5.1 Z* = 15 – 10.2 = 4.8

  5. Trends in Z*:Do Li through Ne:Do C, Si, Ge:

  6. Periodic Properties Overall Trend: Electrons held most tightly in upper left of periodic table

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