Chemistry, 08.11.2019 20:31 bobjill1609

What does the period number of an atom indicate? a. period numbers are equal to the number of valence electrons in an atom. b. period numbers are equal to the number of orbital rings in an atom. c. period numbers are equal to the number of protons in an atom. d. period numbers are equal to the size of an atom.

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What does the period number of an atom indicate? a. period numbers are equal to the number of valen...