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How many electrons are present in an isotope of nitrogen that has a mass number of...

How many electrons are present in an isotope of nitrogen that has a mass number of 15 and no charge?

Select the correct answer below:

1- 15

2- 22

3- 8

4- 7

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Answer #1

Number of electrons= atomic number- charge

For nitrogen atomic number = 7

Number of electrons= 7-0 = 7

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