5. Which of the following complex does not obey the 18-electron rule? (3 points)
(A)
(B)
(C)
(D)

6. Which of the following complex has the lowest energy of CO stretching frequency in the IR region (3 points)? (A) $[\mathrm{V}(\mathrm{CO})_6]^+$ (B) $\mathrm{Cr}(\mathrm{CO})_6$ (C) $[\mathrm{Mn}(\mathrm{CO})_6]^+$ (D) $\mathrm{Fe}(\mathrm{CO})_5$

7. Which of the following is an example of lattice energy? (3 points) (A) \(\mathrm{M}^{+n}(\mathrm{g}) + n\mathrm{X}^{-}(\mathrm{g})\longrightarrow \mathrm{MX}_{n}(\mathrm{g})\) (B) \(\mathrm{M}^{+n}(\mathrm{g}) + n\mathrm{X}^{-}(\mathrm{g})\longrightarrow \mathrm{MX}_{n}(\mathrm{s})\) (C) \(\mathrm{MX}_n(\mathbf{s})\longrightarrow \mathrm{M}^{+n}(\mathbf{g}) + n\mathrm{X}^{-}(\mathbf{g})\) (D) \(\mathrm{MX}_n(\mathbf{g})\longrightarrow \mathrm{M}^{+n}(\mathbf{g}) + n\mathrm{X}^{-}(\mathbf{g})\) (E) \(M(s) + n / 2X_{2}(g)\longrightarrow MX_{n}(s)\)

8. A p-type semiconductor might consist of a lattice of silicon with a trace of (3 points) (A) gallium. (B) $\mathrm{Na}^+$ . (C) phosphorus (D) potassium metal(E) copper, silver or gold

9. Which would have the largest crystal field stabilization energy? (3 points) (A) octahedral complex with \(d^3\) configuration (B) octahedral complex with \(d^4\) low spin configuration (C) tetrahedral complex with \(d^5\) configuration (D) octahedral complex with \(d^6\) low spin configuration (E) octahedral complex with \(d^6\) high spin configuration

10. In which of compounds is the one most likely to be high spin listed first? (3 points) (A) \(\mathrm{Ru(H_2O)_6^{+3}}\) and \(\mathrm{Fe(H_2O)_6^{+3}}\) (B) \(\mathrm{Mn(Cl)_6^{-3}}\) and \(\mathrm{Mn(Cl)_6^{-4}}\) (C) \(\mathrm{Fe(Cl)_6^{-3}}\) and \(\mathrm{Fe(Cl)_4^-}\) (D) \(\mathrm{Ni(NH_3)_4^{+2}}\) and \(\mathrm{Pt(NH_3)_4^{+2}}\) (E) \(\mathrm{Fe(CN)_6^{-3}}\) and \(\mathrm{Fe(H_2O)_6^{+3}}\)

11. The number of unpaired electrons in $\mathrm{K}_4[\mathrm{Co}(\mathrm{CN})_6]$ is: (3 points) (A) 0? (B) 1? (C) 2? (D) 3? (E) None of these

12. What is the ground state term symbol of $p^2$? (3 points) (A) $^1\mathrm{D}$? (B) $^1\mathrm{S}$? (C) $^3\mathrm{P}$? (D) $^3\mathrm{D}$? (E) $^5\mathrm{P}$

13. The Jahn-Teller distortion is greatest in: (3 points) (A) \(\mathrm{Fe(CN)_6^{-4}}\) (B) \(\mathrm{Cr(CN)_6^{-3}}\) (C) \(\mathrm{Cu(F)_6^{-4}}\) (D) \(\mathrm{V(NH_3)_6^{+2}}\) (E) \(\mathrm{Mn(H_2O)_6^{+2}}\)

14. Given the trans-director series, predict the product of these reactions of $\mathrm{Pt(Cl)_3(I)^{-2}}$ with two equivalents of $\mathrm{NH_3}$ . (3 points) $$ \text{trans series: } \mathrm{I}^- > \mathrm{Br}^- > \mathrm{Cl}^- > \mathrm{NH_3} > \mathrm{H_2O} $$ (A) cis-Pt(NH3)2(I)(Cl) (B) trans-Pt(NH3)2(I)(Cl) (C) cis-Pt(NH3)2(Cl)2 (D) trans-Pt(NH3)2(Cl)2 (E) trans-Pt(NH3)(I)(Cl)2

15. Which of these involves reductive elimination? (3 points) (A) \(\mathrm{Rh(Cl)(PPh_3)_3 + CH_3I\rightarrow trans - Rh(Cl)(PPh_3)_3(CH_3)(I)}\) (B) \(\mathrm{NH_4[Re(CO)_5] + CH_3I\rightarrow Re(CO)_5CH_3 + NH_4I}\) (C) \((\mathrm{C_5H_5})\mathrm{Fe}(\mathrm{CO})_2\mathrm{CH}_2\mathrm{CH}_3\rightarrow \mathrm{CO} + (\mathrm{C_5H_5})\mathrm{Fe}(\mathrm{CO})(\mathrm{H})(\pi -\mathrm{CH}_2\mathrm{CH}_2)\) (D) \((\mathrm{C_5H_5})\mathrm{Mn(CO)_3 + PPh_3}\rightarrow \mathrm{CO} + (\mathrm{C_5H_5})\mathrm{Mn(CO)_2(PPh_3)}\) (E) \(\mathrm{NH_4[Ni(CH_3)(CO)_3] + HI\rightarrow CH_4 + NH_4[Ni(CO)_3I]}\)

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