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| • | Question 3.2 plus
a few others: |
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| • | the symbol of the noble gas in period 3 |
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| • | the lightest element in Group IVA |
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| • | the
only metalloid in Group IIIA |
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| • | the element whose atoms contain 18 |
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| protons |
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| • | the element in period 5, Group VIIA |
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| • | Give the name,
atomic number and atomic |
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| mass for Mg |
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