Question

Which how of the following gives the number of protons electrons and neutrons for a neutral phosphorus atom? Phosphorus P 30.974

A protons=15 neutrons=15 electrons =15
B protons=15 neutrons=31 electrons =15
C protons =15 neutrons =16 electrons=15
D the neutrons cannot be calculated giving the information in the table

Answer 1

A protons=15 neutrons=15 electrons =15

it's neutral so olus and minus cancel