Gibbs Weber
01/13/2024 · Middle School

9 protons, 10 electrons Express your answer as an ion.

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An atom with 9 protons is fluorine (F), which normally has 9 electrons, making it neutral. However, if it has 10 electrons, it has gained an extra electron, resulting in a negative charge. The charge can be calculated as follows: - Protons = 9 (positive charge) - Electrons = 10 (negative charge) The overall charge is: \[ 9 \, (\text{protons}) - 10 \, (\text{electrons}) = -1 \] Thus, the ion can be expressed as: \[ \text{F}^- \] So, the answer is the fluoride ion: **F⁻**.

Quick Answer

The ion is F⁻.
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