21. Specify the number of unpaired electrons in CoF6 3– (F– ion is a weak field ligand). (A) 0 (B) 1 (C) 2 (D) 4 (E) 5

21. Specify the number of unpaired electrons in CoF₆ ^3– (F– ion is a weak field ligand).
(A) 0
(B) 1
(C) 2
(D) 4
(E) 5

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統計： A(4), B(0), C(3), D(25), E(2) #3233287

詳解 (共 1 筆)

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題目解析要找出在 CoF₆^(3–) ...

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22. The MnO4ˉ ion is often used to analyze the Fe2+ concentration in an aqueous solution, based on the reaction in acidic condition as follows: (MnO4ˉ + Fe2+ ―→ Fe3+ + Mn2+ ) A 50.00 mL sample of a solution containing Fe2+ requires 40.00 mL of a 0.025 M KMnO4 solution for complete reaction. What is the concentration of the Fe2+ in the original solution? (A) 1.0 × 10-1 M (B) 1.8 × 10-2 M (C) 4.5 × 10-3 M (D) 1.8 × 10-3 M (E) 9.1 × 10-4 M

21. Specify the number of unpaired electrons in CoF₆ ^3– (F– ion is a weak field ligand).
(A) 0
(B) 1
(C) 2
(D) 4
(E) 5

詳解 (共 1 筆)

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