Here's how to figure that out:

* Periodic Table: The periodic table arranges elements in order of increasing atomic number.

* Groups and Periods: Elements in the same vertical column are called a group, and elements in the same horizontal row are called a period.

* Location: Tellurium is in group 16 (also called chalcogens) and period 5. Xenon is in group 18 (noble gases) and period 5.

* Iodine's Place: Iodine is located in group 17 (halogens) and period 5. It fits perfectly between tellurium and xenon.