Trends: ionization enthalpy, oxidation states, atomic radii
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See all →- The E^° value for the Mn^3+/Mn^2+ couple is more positive than that of Cr^3+/Cr^2+ or Fe^3+/Fe^2+ due to change of Answer: 4. d⁴ to d⁵ configuration Key idea: a high E^° for M³⁺/M²⁺ means M³⁺ is easily reduced to a very stable M²⁺ . mathrmMn³⁺ is d⁴ ; on... 1
- Which of the following statements are INCORRECT?A. All the transition metals except scandium form MO oxides which are ionic.B. The highest oxidation number corresponding to the group number in transition metal oxides is attained in Sc_2O_3 to Mn_2O_7… Answer: 4. C and D only Key idea: Recall the d-block oxide trends. A. Correct: MO oxides (except Sc) are ionic. B. Correct: the group oxidat... 1
- The stability of Cu^2+ is more than Cu^+ salts in aqueous solution due to - Answer: 4. hydration energy. Key idea: Stability in aqueous solution depends on the overall enthalpy change, where hydration enthalpy often... 1
- Identify the incorrect statement. Answer: 4. The oxidation states of chromium in CrO ₄²⁻ and Cr ₂ O ₇²⁻ are not the same. Check each statement. (1) mathrmCr³⁺ (half-filled t_... 1