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Chemistry, 01.07.2019 10:00 mgwlisp

An atom of potassium has an atomic mass of 39 amu and an atomic number of 19. it therefore has neutrons in its nucleus. a. 19 c. 20 b. 39 d. 2

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An atom of potassium has an atomic mass of 39 amu and an atomic number of 19. it therefore has neut...
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