☰
✕

The d-And-f-Block Elements
Question
Wired Faculty App

Zn, Cd, Hg compounds are usually white. Explain.

Answer

Transition elelmet exhibit colour due to d-d transition. d-d transition is possible only when d- subshell have unpaired electron.All show +2 oxidation state involving (n–1) d10 configuration having no unpaired electron in subshell. Thus d-d transition is not possible.

Sponsor Area

Some More Questions From The d-And-f-Block Elements Chapter

Which is a stronger reducing agent Cr2+ or Fe2+ and why?

Explain why Cu+ ion is not stable in aqueous solutions?

Actinoid contraction is greater from element to element than lanthanoid contraction. Why?

On what ground can you say that scandium (Z = 21) is a transition element but zinc (Z = 30) is not?

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

Why the melting points of transition elements are high?

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

Name the first element of 3rd transition series.

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