Anonymous asked in Science & MathematicsChemistry · 1 month ago

What is the formal charge of nitrogen in Nitric oxide NO?

2 Answers

  • 1 month ago

    Formal charge on nitrogen ....

    Formal charge is not the same as either ionic charge or oxidation state.  Formal charge is the hypothetical charge if all the bonds were 100% covalent.

    Calculate formal charge:

    FC = VE - NBE - 1/2 BE ..... VE = valence electrons, NBE = nonbonding electrons, BE = bonding electrons

    Start with the Lewis diagram. NO is a free radical with one unpaired electron on nitrogen along with a lone pair.  N has 3 nonbonding electrons, and oxygen has two lone pairs in the Lewis diagram.


    FC on N = 5 - 3 - 1/2(4) = 0

    FC on O = 6 - 4 - 1/2(4) = 0

    The formal charges on both oxygen and nitrogen are zero.

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  • Anonymous
    1 month ago

    I'm going to go with +2 since oxygen is almost always -2.

    • pisgahchemist
      Lv 7
      1 month agoReport

      No.  Formal charge is not the same as the oxidation state.  Oxygen has an oxidation state of -2, but a formal charge of 0 in NO.

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