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Nitrogen is the 7th element on the periodic table. One isotope of nitrogen has atomic mass 15. In a neutral nitrogen-15 atom there are _____ protons, _____ neutrons, and ______ electrons. I don't just need the answer but just an explanation of how you got that.This should be really simple.n a neutral atom, number of electrons = number of protons Therefore number of electrons = 7 Number of protons + number of neutrons = atomic mass Or number of neutrons = atomic mass-number of protons = 15 - 7 = 8 Ans: 7 protons, 8 neutrons, and 7 electrons ____________________.
Subtract the number of protons (atomic number) from the mass number 16. The atomic number of nitrogen is 7, therefore its atoms have 7 protons. The number of neutrons in the a â¦ toms of the isotope nitrogen-16 is 16 -7 = 9 neutrons.ts atomic number is 7 which means it has 7 protons. You subtract the atomic number from the atomic mass to get the â¦ number of neutrons. So, 14 - 7 = 7 neutrons. For Nitrogen-16 the 16 is the atomic mass.