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MHT CET202122 Sep 2021Morning ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

Which block element from following are known as transition elements?

Options

  1. Af-block
  2. Bs-block
  3. Cp-block
  4. Dd-block

Correct answer

D. d-block

Step-by-step solution

Transition elements (also known as transition metals) are elements that have partially filled d orbitals. IUPAC defines transition elements as an element having a d subshell that is partially filled with electrons, or an element that has the ability to form stable cations with an incompletely filled d orbital. In general, any element which corresponds to the d-block of the modern periodic table (which consists of groups 3-12) is considered to be a transition element.

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