Multiple choice

Which of the following statements is false?

  1. A transition metal exhibits the highest oxidation state in oxides and fluorides.

  2. d1 configuration is very unstable in ions.

  3. In an aqueous medium, Cu+ is more stable than Cu2+.

  4. Manganese (III) is highly oxidizing in nature.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In an aqueous medium, Cu2+ is more stable than Cu+. Although energy is required to remove one electron from Cu+ to Cu2+, but the high hydration energy of Cu2+compensates for it. Therefore, Cu+ ion is not stable in aqueous solutions and disproportionate to give Cu2+ and Cu.

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