Q57 / 180 · AIIMS 2018 (27 May) · Chemistry

Which of the following exhibits minimum number of oxidation states?

  • A
    $\mathrm{Mn}$
  • B
    $\mathrm{Np}$
  • Correct answer
    C
    Th
  • D
    $\mathrm{Cr}$

Solution

Thorium can show normally +4 oxidation state whereas $\mathrm{Mn}, \mathrm{Cr}$ can show large number of oxidation states. Np also belongs to $5 f$ series with variable oxidation states.

Hence, the correct answer is option: 'C'.

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