Chemistry - Chp 5 - Electrons in Atoms - Study Guide

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Chemistry - Chp 5 - Electrons in Atoms - Study Guide

  1. 1. Name _____________________________________________ Date ________________ Chapter 5 Review “Electrons in Atoms”• How many electrons can fit into an energy level?• How many possible electrons can exist in each energy level?• Which energy shells have the most energy, which have the least?• Based on the modern model of the atom, where can you find electrons?• Know how to fill up an “Aufbau” diagram (electron configuration diagram)• What are the three rules for electron configurations?
  2. 2. • What are valence electrons?• Know how to determine the number of valence electrons for any element (There are three ways to do this)• How does the period of an element relate to the number of occupied principal energy levels (shells)• Know how to draw a Lewis dot structures for any element• What is the ground state and excited state of an atom?• Know how to recognize an atom as in its ground state or excited state based on its electron configuration• What happens to electrons as they fall back to the ground state?

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