Which of the following mathematical expressions gives the formal charge (FC) on an…

CHEMISTRY · Single correct · AP · Chemistry · Compound Structure and Properties · Compound Structure and Properties

Problem

Which of the following mathematical expressions gives the formal charge (FC) on an atom as it appears in a Lewis structure? (a) FC=(valence electrons)−[non -bonding electrons+2×(number of bonds)] \text{FC}= (\text{valence electrons}) - \bigl[\text{non\,-bonding electrons} + 2\times(\text{number of bonds})\bigr] (b) FC=(valence electrons)−[non -bonding electrons+(number of bonds)] \text{FC}= (\text{valence electrons}) - \bigl[\text{non\,-bonding electrons} + (\text{number of bonds})\bigr] (c) FC=(valence electrons)−[non -bonding electrons+bonding electrons2] \text{FC}= (\text{valence electrons}) - \bigl[\text{non\,-bonding electrons} + \dfrac{\text{bonding electrons}}{2}\bigr] (d) FC=(valence electrons)−[non -bonding electrons2+bonding electrons] \text{FC}= (\text{valence electrons}) - \bigl[\dfrac{\text{non\,-bonding electrons}}{2} + \text{bonding electrons}\bigr]

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