MHT CET Chemistry Question (2026) — Solution

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 the f-block. Neither of them is a transition element. Therefore, the pair Sn and Pm does not include transition elements. Answer: Sn and Pm