Q. Differentiating electron in inner transition elements enters the………….. orbital.
A) $s$
B) $p$
C) $d$
D) $f$
Explanation
(d)
In inner transition elements, the differentiating electrons enter into $(6n - 2)f$ orbital. Therefore, these elements are also known as $f$-block elements.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.