Q.
Which among the following electronic configurations belong to main group elements?
A. [Ne]3s$^1$ B. [Ar]3d$^3$ 4s$^2$
C. [Kr]4d$^{10}$5s$^2$5p$^5$ D. [Ar]3d$^{10}$4s$^1$
E. [Rn]5f$^0$6d$^2$7s$^2$
Choose the correct answer from the options given below:
A) B and E only
B) A and C only
C) D and E only
D) A, C and D only
Explanation
[Solution by Claude - not from source] A is Na and C is I (s- and p-block, main group). B is V, D is Cu and E is Rf (d-block). So A and C only. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.