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.

Given elements are arranged in decreasing order of atomic radius as follows.

                    Pb > Al > Cl > F  

Explanation:

Atomic radius is defined as the distance between the nucleus of an atom and its valence shell. More is the distance more will be the atomic size of atom.

When we move down a group then there occurs an increase in atomic radius of the elements but when we move across a period then there occurs a period then there occurs a decrease in atomic radii of the elements.

Both fluorine and chlorine are group 17 elements. Aluminium is a group 13 element and lead is a group 14 element.

Therefore, given elements are arranged in decreasing order of atomic radius as follows.

                    Pb > Al > Cl > F  

pv=nrt

explanation: