Question
Chemistry Question on Electronic Configurations Of Elements And The Periodic Table
The actinoids exhibit more number of oxidation states in general than the lanthanoids because
A
(A) The 5f orbitals extend further from the nucleus than the 4f orbitals
B
(B) The 5f orbitals are more buried than the 4f orbitals
C
(C) There is a similarity between 4f and 5f orbitals in their angular part of the wave function.
D
(D) The actinoids are more reactive than lanthanoids
Answer
(A) The 5f orbitals extend further from the nucleus than the 4f orbitals
Explanation
Solution
Explanation:
shielding effect of 5f < shielding effect of 4f so Zeff (z effect) in actinoidis < Zeff (z effect) in lanthanoid so extraction of electrons in actinoid is easy than lanthanoid which has 4f and better shielding