D-And F-Block Elements Ques 431
Question: Which of the following is correct about basic strength of hydroxide-
Options:
A) $ Sc{{(OH)}_3}>Y{{(OH)}_3}>La{{(OH)}_3} $
B) $ La{{(OH)}_3}>Y{{(OH)}_3}>Sc{{(OH)}_3} $
C) $ La{{(OH)}_3}>Y{{(OH)}_3}>Sc{{(OH)}_3} $
D) $ Y{{(OH)}_3}>La{{(OH)}_3}>Sc{{(OH)}_3} $
Show Answer
Answer:
Correct Answer: A
Solution:
Size $ =S{{c}^{3+}}<{{Y}^{3+}}<L{{a}^{3+}} $ Ionic character $ =Sc{{(OH)}_3}>Y{{(OH)}_3}>La{{(OH)}_3} $ Basic strength $ =Sc{{(OH)}_3}>Y{{(OH)}_3}>La{{(OH)}_3} $
