QuestionDetermine the number of protons, neutrons, and electrons in the ion ${ }_{25}^{55} \mathrm{Mn}^{2+}$.

Studdy Solution
Calculate the number of electrons.
$$Electrons =25 -2 =23$$The ion ${ }_{25}^{55} \mathrm{Mn}^{2+}$ has25 protons,30 neutrons, and23 electrons.