3 years ago

A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have?

Chemistry

2 answers:

kodGreya [7K]3 years ago

8 0

The answer is 5 subtract it

goldfiish [28.3K]3 years ago

7 0

To find the number of electrons, just subtract the amu and the atomic number (aka number of protons or electrons)...

so it is...

9-4=5 neutrons

Brainliest plz! :)

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