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Chemistry, 26.06.2019 21:30 babbity2009
An atom of potassium-37 and an atom of potassium-42 differ in the total number of a-positrons b-neutrons c-electrons d-protons
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An atom of potassium-37 and an atom of potassium-42 differ in the total number of a-positrons b-neut...
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