Most acidic among given compound is - Vidyadip

MCQ

Most acidic among given compound is

A
$Pr(OH)_3$
B
$Gd(OH)_3$
C
$Sm(OH)_3$
✓
$Er(OH)_3$

✓

Answer

Correct option: D.

$Er(OH)_3$

d
In lanthanoids hydroxides on moving left to right acidic nature increases.

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