Which of the following cations is most likely to form base-insoluble hydroxides?

Question

Quizplus · Accepted Answer

Aluminum (Al) is the only option with a +3 charge, which makes it highly polarizing, able to attract and hold onto hydroxide ions (OH-) in a lattice structure. This results in the formation of base-insoluble hydroxides. The other cations have lower charges and are less likely to attract and hold onto hydroxide ions, resulting in soluble hydroxides.

Which of the Following Cations Is Most Likely to Form