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nullgaming650
What is the mass number of an atom with 7 protons, 8 neutrons, and 7 electrons? 

A Nitrogen atom with 7 protons and 8 neutrons has a mass number of 15 

That Should Be The Correct Answer :D

Hope I Helped

-Nullgaming650
Ver imagen nullgaming650
An atom of nitrogen-15 (15n) , isotope of regular nitrogen. It occurs. i hope what ive found helped, let me know what happens!