Using the following generic atom description, choose the correct method for determining the number of neutrons.
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A) subtract G from F
B) subtract F from G
C) add F and G
D) divide F by G
E) look it up on the periodic table
Question 2
If an element has 15 protons and 16 neutrons and 15 electrons, what is the mass number of the element?
A) 31
B) 15
C) 16
D) 30
E) none of the above