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Answer to Question #63607 in General Chemistry for Emmanuel D. Kollie

Question #63607
An atom has an atomic number of 9 and a mass number of 19. determine the number of protons
1
Expert's answer
2016-11-24T11:38:12-0500
The number of protons correspond to atomic number of the element (atom) that is why the number of protons are 9.

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