12. Which of the following statements correctly defines or describes a *superacid*?
(A) A superacid is any acid stronger than sulfuric acid in terms of molarity
(B) A superacid is an acid whose Hammett acidity function $(\mathrm{H}_{\mathrm{a}})$ is lower than that of pure sulfuric acid
(C) A superacid is an acid that can protonate only strong bases such as amines
(D) A superacid always contains fluorine and antimony elements
(E) A superacid is an acid that is always stronger than sulfuric acid in water

13. In an $\mathrm{O_h}$ field, the ground term for a $d^2$ free ion $(^{3}F)$ splits into: (A) $\mathrm{A_{1g} + E_g}$ (B) $\mathrm{A_{2g} + T_{1g} + T_{2g}}$ (C) $\mathrm{T_{1u} + T_{2u}}$ (D) $\mathrm{E_g + T_{2u}}$ (E) $\mathrm{A_{2u} + E_u}$

14. Which of the following acids is the *strongest* under aqueous conditions? (A) Chloroacetic acid (B) Acetic acid (C) Phenol (D) Prussic acid (E) Propionic acid

15. Based on the HSAB principle, which of the following metal-ligand pairs is expected to exhibit the strongest covalent bonding character? (A) $\mathrm{Mg^{2+}}$ with $\mathrm{F^{-}}$ (B) $\mathrm{Ag^{+}}$ with $\mathrm{I^{-}}$ (C) $\mathrm{Pt^{2+}}$ with $\mathrm{CN^{-}}$ (D) $\mathrm{Pt^{2+}}$ with $\mathrm{S^{2-}}$ (E) $\mathrm{Al^{3+}}$ with $\mathrm{OH^{-}}$

16. Which factor most often increases $\Delta_{\mathrm{o}}$ for first-row transition metal complexes (all ligand/coordination number/structure equal)? (A) Decreasing oxidation state (B) Changing ligand from $\mathrm{CN^{-}}$ to $\mathrm{I^{-}}$ (C) Increasing metal oxidation state (D) Going from $5d$ to $3d$ metal (E) Lower coordination number always increases $\Delta_{\mathrm{o}}$

17. Which of the following statements correctly describes an intramolecular charge-transfer (ICT) state in a donor-acceptor (D-A) molecule? (A) The ICT state arises from a $\sigma \rightarrow \sigma^{*}$ transition localized on the donor unit (B) The ICT excited state typically involves electron transfer from the acceptor HOMO to the donor LUMO (C) The ICT state usually shows low sensitivity to solvent polarity (D) The ICT transition generally corresponds to electron density shifting from the donor to the acceptor upon excitation (E) Strong ICT character always leads to phosphorescence at room temperature 

18. Which of the following statements about lithium (Li) is correct? (A) Li shows the weakest hydration enthalpy among the alkali metals (B) Li readily forms a stable $\mathrm{Li}^{-}$ anion in aqueous solution (C) Li is widely used in Li-ion batteries because of its small ionic radius (D) Li exhibits strong relativistic effects similar to Cesium (E) $\mathrm{Li}_{2}\mathrm{O}$ is acidic in nature

19. Which complex is most likely square planar? (A) $\left[\mathrm{CoF}_{4}\right]^{2-}$ (B) $\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}$ (C) $\left[\mathrm{ZnCl}_{4}\right]^{2-}$ (D) $\left[\mathrm{FeCl}_{4}\right]^{-}$ (E) $\left[\mathrm{MnBr}_{4}\right]^{2-}$

20. Which statement about heterogeneous catalysis is correct? (A) Catalytic activity originates primarily from the bulk atoms of the solid catalyst (B) Adsorption of reactants on the catalyst surface increases the activation energy of the reaction (C) Surface defects, edges, and corners often serve as active sites for catalysis (D) The catalyst is consumed during the reaction to form the product (E) The reaction rate in heterogeneous catalysis is independent of the catalyst surface area

21. Which statement best explains why $4d/5d$ complexes are more often low-spin than $3d$ analogues? (A) $4d/5d$ pairing energy is always larger (B) $\Delta$ is larger due to greater radial extension and overlap (C) $4d/5d$ metals cannot form octahedral complexes (D) Spin-only rule fails for $4d/5d$ metals (E) Only charge-transfer transitions occur

22. Bartlett's classic experiment demonstrated for the first time that a noble gas can form a stable compound. Which of the following statements about this discovery is correct? (A) Bartlett showed that xenon reacts directly with $\mathrm{F}_{2}$ to form $\mathrm{XeF}_{6}$ at room temperature (B) Bartlett reacted xenon with $\mathrm{PtF}_{6}$ to form a xenon fluoroplatinate salt (C) The product of Bartlett's experiment was neutral $\mathrm{XeF}_{2}$ (D) In Bartlett's experiment, $\mathrm{PtF}_{6}$ acted as a reducing agent toward xenon (E) Bartlett demonstrated that xenon is more reactive than krypton under all conditions

115年 - 115 台灣聯合大學系統_碩士班招生考試_化學類：無機化學#139669

115年 - [無官方正解]115 國立成功大學_碩士班招生考試試題_化學系：無機化學#138380

114年 - [無官方正解]114 國立成功大學_碩士班招生考試試題_化學系：無機化學#139068

114年 - 114 台灣聯合大學系統_碩士班招生考試試題_化學類：無機化學#126449

113年 - [無官方正解]113 國立成功大學_碩士班招生考試試題_化學系：無機化學#139100

113年 - 113 台灣聯合大學系統_碩士班招生考試試題_化學類：無機化學#122281

112年 - [無官方正解]112 國立成功大學_碩士班招生考試試題_化學系：無機化學#138434

112年 - 112 台灣聯合大學系統_碩士班招生考試_化學類:無機化學#117893

111年 - [無官方正解]111 國立嘉義大學_碩士班招生考試試題_應用化學系：無機化學#146611

111年 - 111 台灣聯合大學系統_碩士班招生考試試題_化學類：無機化學#118896