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Calculate the Number of Protons in the Average Potassium Atom

Question 4

Multiple Choice

Calculate the number of protons in the average potassium atom if the atomic weight of potassium is 39 amu and the atomic number of this element is 19.


A) 19
B) 20
C) 39
D) 58
E) The number of protons is impossible to determine from this information.

Correct Answer:

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