Question

Which of the following is the most basic ?

• A. $Ce(OH{)}_3$
• B. $Lu(OH{)}_3$
• C. $Yb(OH{)}_3$
• D. $Al(OH{)}_3$

Answer 1

The correct option is A $Ce(OH{)}_3$

As we move from left to right in a raw, hydroxide becomes basic to neutral to acidic. And also as we move down electronegativity decreases so basicity increases so $Ce(OH{)}_3$ is most basic.