asked 192k views
21 votes
A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have? (3 points)

13

5

9

4
Please help :c

1 Answer

3 votes
I think the answer is 5! Neutrons + Electrons=9 so 4+5=9. I hope this helps!
answered
User Wouter Lievens
by
7.8k points
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