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ChemistryNEET 2020Transition elements: trends and properties

The d- and f-Block Elements

Identify the incorrect statement.

  1. A.Cr2+\mathrm{Cr^{2+}} (d4d^4) is a stronger reducing agent than Fe2+\mathrm{Fe^{2+}} (d6d^6) in water
  2. B.Transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and form complexes
  3. C.Interstitial compounds are those formed when small atoms like H, C or N are trapped inside the crystal lattices of metals
  4. D.The oxidation states of chromium in CrO42−\mathrm{CrO_4^{2-}} and Cr2O72−\mathrm{Cr_2O_7^{2-}} are not the same✓

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