Using periodic trends, arrange the following elements in order of increasing atomic radius: Al, Ca, and P and explain how you choose that order?
In increasing order of atomic radius:
Atomic size decreases across a Period, and increases down a Group. As
As a chemist, as a physical scientist, you should seek the data that informs this argument. In other words, you should get a table of atomic size in usable units, and see how it correlates to its position on the Periodic Table.