Trying to find the right answer to this..

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

The d-And-f-Block Elements

Short Answer Type

11.

The outer electronic configuration of copper is 3d¹⁰ 4s¹, yet it is considered transition element. Why?

538 Views

12. Why the melting points of transition elements are high?

456 Views

13. Why Zn, Cd and Hg are not regarded as transition elements?

1663 Views

14.

Name the first element of 3rd transition series.

466 Views

15.
Though copper, silver and gold have completely filled sets of d-orbitals yet they are considered as transition metals. Why?

These metals in their common oxidation states have incompletely filled d-orbitals e.g., Cu²⁺ has 3d¹⁰ and Au³⁺ has 5d⁸ configuration.
copper displays two oxidation states (+1 and +2). In the +1 oxidation state, an electron is removed from the s-orbital. However, in the +2 oxidation state, an electron is removed from the d-orbital. Thus, the d-orbital now becomes incomplete (3d⁹). Hence, it is a transition element. wherein it will have incompletely filled d-orbitals (4d), hence a transition metal.