Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The correct order of the atomic radii of $C,Cs,Al$ and $S$ is:

JEE MAIN - 2019

Answer 1

Carbon is in $2^{nd}$ period
$Al$ and $S$ are in $3^{rd}$ period
$Cs$ is in $6^{th}$ period
Carbon has the smallest radius. $S$ with higher atomic number has lesser radius than $Al$. $Cs$ has the highest radius.
Atomic radii order: $C<S<Al<Cs$
Hence, correct option is (d)