☰
✕

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

Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being

  • 4f orbitals more diffused than the 5f orbitals

  • lesser energy difference between 5f and 6d than between 4f and 5d orbitals

  • more energy difference between 5f and 6d than between 4f and 5d orbitals

  • more reactive nature of the actinoids than the lanthanoids

Answer

B.

lesser energy difference between 5f and 6d than between 4f and 5d orbitals

Being lesser energy difference between 5f and 6d than 4f and 5d orbitals.

Sponsor Area

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

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?

Why are transition elements so named?

Why are transition elements known as d-block elements?