Place the following elements in order of decreasing atomic radius: chlorine (Cl), lead (Pb), aluminum (Al), and fluorine (F).
Rank the atomic radius from largest to smallest. To rank items as equivalent, overlap them.
Pb, Al, Cl, F
Atomic radius is one periodic property of the elements. Atoms become smaller from left to right across a row, but they become larger going down a column. The largest atoms are thus found in the bottom left corner of the periodic table.
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