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AIIMS2018Chemistryd and f Block Elements

Least number of oxidation states is shown by

Options

  1. ANp (Neptunium)
  2. BTh (Thorium)
  3. CU (Uranium)
  4. DRe (Rhenium).

Correct answer

B. Th (Thorium)

Step-by-step solution

Np (+3,+4,+5,+6) , Th (+3,+4) , U (+3,+4,+5,+6) and Re (+2,+4,+6,+7,-1)

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