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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
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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

User Pieter Geerkens
by
8.2k points

1 Answer

3 votes
I think the answer is 5! Neutrons + Electrons=9 so 4+5=9. I hope this helps!
User Wouter Lievens
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A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have?
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