arrange the following elements, from top to bottom, in the correct order of increasing atomic radius…

Brief Explanations:

Atomic radius increases down a group and decreases across a period from left - to - right. Sb (Antimony), Te (Tellurium), In (Indium) are in the same period (Period 5) with atomic radius In > Sb > Te. Rb (Rubidium) and Sr (Strontium) are in Period 5 as well, and Rb is in Group 1 and Sr in Group 2, so Rb > Sr. Also, Rb and Sr are larger than In, Sb, Te because they have an extra electron shell compared to some elements in the previous periods.

Answer:

Te, Sb, In, Sr, Rb