Chemistry, 05.12.2019 19:31 kaylaamberd

Which two elements are in the same period? a. hydrogen (h) and neon (ne)b. tin (sn) and antimony (sb)c. fluorine (f) and chlorine (cl)d. arsenic (as) and antimony (sb)

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Which two elements are in the same period? a. hydrogen (h) and neon (ne)b. tin (sn) and antimony (sb...