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Challenge 5 T. Trimpe 2008 http://sciencespot.net/

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Use your knowledge of the relationships in the periodic table to answer each question. ABC DEF GHI 1. If Element D has 14 protons, how many would an atom of Element F have? 2. If Element H has 3 valance electrons, how many would Element C have? 3. If Element I has 4 energy levels, how many would Element B have? 4. If Element C has 22 electrons, how many would Element A have? 5. If Element F has 4 valence electrons, how many would Element G have? Mystery Table

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The answers are … ABC DEF GHI 16 4 2 24 2 1. If Element D has 14 protons, how many would an atom of Element F have? 2. If Element H has 3 valance electrons, how many would Element C have? 3. If Element I has 4 energy levels, how many would Element B have? 4. If Element C has 22 electrons, how many would Element A have? 5. If Element C has 4 valence electrons, how many would Element G have?

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2. What are isotopes? Use two particles from the table above to illustrate your answer. (3 marks) 17 O & 18 O (1) Same Atomic mass / number of protons.

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