Multiple choice

Which of the following pairs is correctly matched?

  1. Covalent character: MI > MBr > MCl > MF

  2. Stability of +1 oxidation state: In < Ga < Al < Tl

  3. Most stable form of phosphorus: White phosphorus

  4. Ionic size: S2- > Cl- > K+ > Ca2+

  5. Acidic strength: HClO > HIO > HBrO
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A Correct answer
Explanation

The correct order of covalent character is: MI > MBr > MCl > MF. As the size of the anion decreases, covalency decreases.

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