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

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

Use the information provided to answer the questions. 3 Li Lithium 6.94 1 H Hydrogen 1.01 14 Si Silicon 28.09 18 Ar Argon 39.95 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?

The answers are … What is the atomic number for lithium? 3 3 Li Lithium 6.94 1 H Hydrogen 1.01 14 Si Silicon 28.09 18 Ar Argon 39.95 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 14 39.95 1 4 14 8 39.95