Chem

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Find the number of protons and electrons of N-3.

Would it be 7protons, and 4electrons?
or 7 protons, and 7electrons?????

  • Chem -

    neutral Nitrogen has an atomic number of 7 (from periodic table) thus it has 7 protons and 7 electrons (equal +p and -e).
    Since it is an ion with charge -3, it means that it gained 3 electrons. therefore, N^-3 has 7 protons and 10 electrons.

    hope this helps~ :)

  • Chem -

    thank you!

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