Using only the periodic table arrange the following elements in order of increasing atomic radius:

Question

xenon, tin, tellurium, indium

Answer 1

The ionic radius gets smaller going from left to right. It also gets smaller going from bottom to top.

You can also think of the ionic radius as getting larger from right to left as well as from top to bottom.

This means that the largest radius is in the bottom left corner and the smallest radius is at the top right corner.

Answer 2

Xenon [Xe] = Far right row of Peroidic Table (PT), 5th row

Tin [Sn] = 5th from Right Column of PT, 5th row

Tellurium [Te] = 3rd from right of PT, 5th row

Indium [In] = 6th from right of PT, 5th row

The elements are smallest in the upper right corner of the PT.

The elements are largest in the bottom left corner of the PT.

Since all 4 elements are on the same row (5th row), they get larger going Left.

So, in order of smallest to largest is: Xenon, Tellurium, Tin, Indium