d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge

Question 1366

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Which of the following oxidation states is NOT commonly achieved by Chromium (Cr) in its simple halides according to Table 4.5?

+2
+3
+5
+6

Question 1367

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What is the primary reason for the high standard electrode potential (E°) for the M³⁺/M²⁺ couple of Zinc (Zn)?

The ease of oxidizing Zn²⁺
The stability of the Zn³⁺ ion
The low hydration energy of Zn²⁺
The high energy required to remove an electron from the stable d¹⁰ configuration of Zn²⁺

Question 1368

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Based on the provided information, which statement best describes the relationship between electronic configuration and the E°(M³⁺/M²⁺) value for Vanadium (V)?

V³⁺ has a more stable configuration than V²⁺
V²⁺ is easily oxidized due to its high energy
The high E° value is related to the stability of V³⁺
The low E° value is related to the stability of the V²⁺ ion with a half-filled t₂g level

Question 1369

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Why is the standard electrode potential (E°) for the M³⁺/M²⁺ couple relatively high for Manganese (Mn)?

The instability of the Mn³⁺ ion
The ease of oxidizing Mn²⁺
The exceptional stability of the Mn²⁺ ion with a d⁵ half-filled configuration makes further oxidation difficult
The low hydration energy of Mn³⁺

Question 1370

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Which first-row transition metal listed has the highest second ionization enthalpy (Δ₂H°) according to the data?

Cr
Ni
Cu
Fe

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