Chemistry, 07.11.2019 02:31, barbaragomez27

What element on the periodic table has a period of 3, and a group of 5?

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Chemistry, 22.06.2019 02:50, ctaylor15

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Chemistry, 22.06.2019 13:00, jaylanmahone223

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Chemistry, 22.06.2019 14:50, rebeccamckellpidge

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