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MHT CET20255 May 2025Evening ShiftChemistryd and f Block ElementsActual

Which from following elements belongs to inner transition elements?

Options

  1. ACm
  2. BW
  3. CMo
  4. DRu

Correct answer

A. Cm

Step-by-step solution

The inner transition elements are the f-block elements, comprising the lanthanides (atomic numbers 57–71) and actinides (atomic numbers 89–103). Curium (Cm) has atomic number 96 , placing it among the actinides and thus within the inner transition elements. Tungsten (W, 74 ), molybdenum (Mo, 42 ), and ruthenium (Ru, 44 ) are all d-block transition metals. Final answer: A

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