What is the general formula of lanthanoid hydroxide? (Consider Ln as any lanthanoid element)

What is the general formula of lanthanoid hydroxide? (Consider Ln as any lanthanoid element)
  1. $\operatorname{Ln}(\mathrm{OH})$
  2. $\operatorname{Ln}(\mathrm{OH})_2$
  3. $\operatorname{Ln}(\mathrm{OH})_3$
  4. $\mathrm{Ln}(\mathrm{OH})_4$

Solution

Stable oxidation state of $\operatorname{Ln}$ is +3 . $\therefore \quad$ General formula for lanthanoid hydroxide is $\mathrm{Ln}(\mathrm{OH})_3$.

Asked in: MHT CET 2024 (16 May Shift 1)

Practice more Transition and Inner Transition Elements questions on Aicharya