Click on the graph to see the details. On the graph below, metals with electronegativities less than 1.5 are plotted as open circles. Click to see the details. Taken from Wulfsberg, Gary. Some elements which would be expected to react explosively with water are inert.
Carbon tetrachloride is an example.
As the radius of the ion increases, the maximum coordination number also increases. Maximum coordination number increases down a family in the periodic table. This affects the acidities of these cations. When a water molecule is ionized upon coordination to a metal ion, a hydroxide group is left attached to the metal. Additional coordinated water molecules may also hydrolyze.