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Chemistry, 14.07.2020 04:01 genyjoannerubiera
Why does a new period start on the periodic table, instead of the row continuing? A. A new period starts when a new energy shell starts. B. A new period starts when a new neutron cycle starts. C. None of these D. It is based on how many protons it has.
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Why does a new period start on the periodic table, instead of the row continuing? A. A new period st...
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