Q. Identify the incorrect statement among the following
A) $d$-block elements show irregular and erratic chemical properties among themselves.
B) La and Lu have partially filled $d$-orbitals and no other partially filled orbital.
C) The chemistry of various lanthanoids is very similar.
D) $4f$ and $5f$-orbitals are equally shielded.
Explanation
(d)
$4f$ and $5f$-belongs to different shell, experience different amount of shielding.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.