Deepak Scored 45->99%ile with Bounce Back Crack Course. You can do it too!

# The correct order of the atomic radii of

Question:

The correct order of the atomic radii of $\mathrm{C}, \mathrm{Cs}, \mathrm{Al}$ and $S$ is:

1. $\mathrm{S}<\mathrm{C}<\mathrm{Al}<\mathrm{Cs}$

2. $\mathrm{S}<\mathrm{C}<\mathrm{Cs}<\mathrm{Al}$

3. $\mathrm{C}<\mathrm{S}<\mathrm{Cs}<\mathrm{Al}$

4. $\mathrm{C}<\mathrm{S}<\mathrm{Al}<\mathrm{Cs}$

Correct Option: , 4

Solution:

Atomic radii order : $\mathrm{C}<\mathrm{S}<\mathrm{Al}<\mathrm{Cs}$

Atomic radius of $\mathrm{C}: 170 \mathrm{pm}$

Atomic radius of S : $180 \mathrm{pm}$

Atomic radius of $\mathrm{Al}: 184 \mathrm{pm}$

Atomic radius of $\mathrm{Cs}: 300 \mathrm{pm}$