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Atomic Math Challenge #2: Answer Key

This resource provides answers to questions about atomic numbers, protons, electrons, neutrons, and atomic masses of elements. Test your knowledge in atomic structure!

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Atomic Math Challenge #2: Answer Key

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  1. Atomic Math Challenge #2 T. Trimpe 2008 http://sciencespot.net/

  2. 1HHydrogen1.01 3LiLithium6.94 14SiSilicon28.09 18ArArgon39.95 Use the information provided to answer the questions. • What is the atomic number for lithium? • How many protons does an atom of Si have? • What is the atomic mass for Argon? • How many electrons does an atom of H have? • How many neutrons are in an atom of Li? • How many electrons are in an atom of Si? • How many electrons would be in the second energy level of an atom of Si? • How many protons and neutrons are in an atom of Argon?

  3. 1HHydrogen1.01 3LiLithium6.94 14SiSilicon28.09 18ArArgon39.95 The answers are … 3 • What is the atomic number for lithium? • How many protons does an atom of Si have? • What is the atomic mass for Argon? • How many electrons does an atom of H have? • How many neutrons are in an atom of Li? • How many electrons are in an atom of Si? • How many electrons would be in the second energy level of an atom of Si? • How many protons and neutrons are in an atom of Argon? 14 39.95 1 4 14 8 39.95

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