Q. Which of the following oxides is strongly basic?
A) $Tl_{2}O$
B) $B_{2}O_{3}$
C) $Al_{2}O_{3}$
D) $Ga_{2}O_{3}$
Explanation
(a)
As we move down the group , the basic nature of the oxides of group 13 elements increases. $Tl_{2}O$ in aqueous solution gives TIOH which is as strong a base as alkali metal hydroxides
$Tl_{2}O + H_{2}O\ \longrightarrow 2TIOH$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.