JEE Main201911 Jan 2019Morning ShiftChemistryClassification of Elements and Periodicity in PropertiesActual
The correct order of the atomic radii of C , Cs , Al , and S is:
Options
- AC < S < A 1 < Cs
- BS < C < Cs < Al
- CS < C < Al < Cs
- DC < S < Cs < Al
Correct answer
A. C < S < A 1 < Cs
Step-by-step solution
On going down the group, size increases while going from left to right in a period size decreases, so order is C < S < Al < Cs