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NEETChemistryd and f Block Elements

What is a characteristic feature of the lanthanoids chemistry that makes them unique compared to ordinary transition elements?

Options

  1. AThey have multiple stable oxidation states
  2. BThey are highly radioactive
  3. CThey have similar sizes and nuclear charges
  4. DThey form complex compounds

Correct answer

C. They have similar sizes and nuclear charges

Step-by-step solution

Lanthanoids resemble one another closely in size and nuclear charge than do the members of ordinary transition elements in any series.

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