Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
COMEDK2021Chemistryd and f Block Elements

In 3 d -transition series, which one has the least melting point?

Options

  1. AV
  2. BZn
  3. CMn
  4. DCu

Correct answer

B. Zn

Step-by-step solution

The melting points of 3d -transition elements depend on the strength of metallic bonding, which is determined by the number of unpaired electrons available for delocalization. In the 3d series, the electronic configuration of Zinc is [Ar] 3d¹⁰ 4s² . Since all d -orbitals are completely filled in Zinc, there are no unpaired electrons available for metallic bonding. Consequently, the interatomic metallic bonds in Zinc are the weakest among the 3d -transition series elements. As a result, Zinc exhibits the lowest melt

Practice d and f Block Elements on Quantrex Academy →

More from d and f Block Elements

Pick out the correct option Assertion(A): Mercury is not considered as a transition element Reason (R): Mercury is a liquid 2026Which of the following does not correctly represent the order of the property indicated against it? 2026The element with the highest third ionisation enthalpy is: 2026The product and its colour when MnO₂ is fused with KOH in presence of O₂ : 2026The ion that has a spin only magnetic moment of 5.9 BM is: 2026Which one of the following species will impart colour to an aqueous solution? 2026The basic character of transition metal monoxides follows the order: 2026K ₂ Cr ₂ O ₇ on heating with aqueous NaOH gives ------------------------- 2026 Full d and f Block Elements list All COMEDK PYQs