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MHT CET202620 April 2026Evening ShiftChemistryd and f Block ElementsActual

Which of the following pairs of elements does NOT include transition elements?

Options

  1. AMn and Ag
  2. BZr and Au
  3. CMo and Pt
  4. DSn and Pm

Correct answer

D. Sn and Pm

Step-by-step solution

Transition elements are the d-block elements (groups 3 to 12) in the periodic table, which have incompletely filled d-orbitals in their ground state or in any of their common oxidation states. Mn (Manganese, Group 7) and Ag (Silver, Group 11) are transition elements. Zr (Zirconium, Group 4) and Au (Gold, Group 11) are transition elements. Mo (Molybdenum, Group 6) and Pt (Platinum, Group 10) are transition elements. Sn (Tin) belongs to Group 14 and is a p-block element. Pm (Promethium) is a lanthanide and belongs to

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