Arrange the following elements in order of increasing atomic radius.
Sr, Rb, Sb, I, In

Name: Arrange the following elements in order of increasing atomic radius. Sr, Rb, Sb, I, In
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Question

Quizplus · Accepted Answer

Atomic radius increases down a group and decreases across a period on the periodic table. Rb and Sr are in the same group with Rb below Sr, so Rb is larger. Sb, I, and In are in the same period, with atomic radius increasing from Sb to In. Therefore, the correct order from smallest to largest is I < Sb < In < Sr < Rb.

Arrange the Following Elements in Order of Increasing Atomic Radius