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Chapter 7: Problem 125

Write equations corresponding to the following. a. the fourth ionization energy of Se b. the electron affinity of \(\mathrm{S}^{-}\) c. the electron affinity of \(\mathrm{Fe}^{3+}\) d. the ionization energy of \(\mathrm{Mg}\)

Short Answer

Expert verified
a. \(Se^{3+} + IE_4 \rightarrow Se^{4+} + e^-\) b. \(S^- + e^- \rightarrow S^{2-} + EA\) c. \(Fe^{3+} + e^- \rightarrow Fe^{2+} + EA\) d. \(Mg + IE_1 \rightarrow Mg^+ + e^-\)

Step by step solution

01

a. Fourth ionization energy of Se

The fourth ionization energy of Se refers to the energy required to remove an electron from the Se³⁺ ion. The general equation for ionization energy is: \[X^{n+} + Energy \rightarrow X^{(n+1)+} + e^-\] So, for the fourth ionization energy of Se, we have: \[Se^{3+} + IE_4 \rightarrow Se^{4+} + e^-\]
02

b. Electron affinity of S⁻

The electron affinity of S⁻ refers to the energy change when an electron is added to the S⁻ ion. The general equation for electron affinity is: \[X^{n-} + e^- \rightarrow X^{(n-1)-} + Energy\] So, for the electron affinity of S⁻, we have: \[S^- + e^- \rightarrow S^{2-} + EA\]
03

c. Electron affinity of Fe³⁺

The electron affinity of Fe³⁺ refers to the energy change when an electron is added to the Fe³⁺ ion. Applying the general equation for electron affinity, we get: \[Fe^{3+} + e^- \rightarrow Fe^{2+} + EA\]
04

d. Ionization energy of Mg

The ionization energy of Mg refers to the energy required to remove an electron from the neutral Mg atom. Using the general equation for ionization energy, we write: \[Mg + IE_1 \rightarrow Mg^+ + e^-\]

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