Question

Which one of the following exist in aqueous medium?
M=Aluminium

• A. $\left[M\right(H_{2}O{)}_6{]}^{3+}$
• B. $\left[M\right(OH{)}_3{]}^{-}$
• C. $\left[M\right(H_{2}O{)}_5{]}^{3+}$
• D. $\left[M\right(H_{2}O{)}_6{]}^{2+}$

Answer 1

The correct option is A $\left[M\right(H_{2}O{)}_6{]}^{3+}$

Both Tetrahedral $\left[Al\right(OH{)}_4{]}^{-}$ and $\left[Al\right(H_{2}O{)}_6{]}^{3+}$ octahedral exist in aqueous medium.
in below structure M is Al.