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NEETChemistryd and f Block Elements

Which actinoid element has the highest known oxidation state?

Options

  1. AThorium (Th)
  2. BProtactinium (Pa)
  3. CUranium (U)
  4. DNeptunium (Np)

Correct answer

D. Neptunium (Np)

Step-by-step solution

The maximum oxidation state increases from +4 in Thorium (Th) to +5, +6, and +7 in Protactinium (Pa), Uranium (U), and Neptunium (Np) respectively.

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