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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 ____________________.
Well it depends on the atom. Like for instance Hydrogen has 1 electron and 1 proton and Nitrogen has 7 protons and 7 electrons. If the atom is charged, then the number of prot â¦ ons and electrons are not equal.For example, hydrogen ion with +1 charge has 1 proton and 0 electrons.If the number of electrons is the same as the number of protons, then it is said to be neutral.ulfur's atomic number is 16. Neutral sulfur would then have 16 protons and 16 electrons. Since we're dealing with S 2- though, we need to add 2 electrons to this, making 18.