Year: 2025
Topic: Classification of Elements and Periodicity in Properties
Time :
1.
Which among the following electronic configurations belong to main group elements?
A. [Ne]3s1
B. [Ar]3d3 4s2C. [Kr]4d10 5s2 5p5D. [Ar]3d104s1
E. [Rn]5f0 6d27s2
Choose the correct answer from the option given below :
A. [Ne]3s1
B. [Ar]3d3 4s2C. [Kr]4d10 5s2 5p5D. [Ar]3d104s1
E. [Rn]5f0 6d27s2
Choose the correct answer from the option given below :