Q. In which block does 106th element belong?
A) $s$-block
B) $p$-block
C) $d$-block
D) $f$-block
Explanation
(c)
The electronic configuration of the element having atomic number 106 is $\lbrack Rn\rbrack_{86},\ 7s^{1},\ 5f^{14},\ 6d^{5}$
Since, the last electron enters in $d$-orbit, it is a $d$-block element. Its IUPAC name is unnilhexium (Unh)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.