Consider the following statements: (I) La`(OH)_(3)` is the least basic among the hydroxides of Ianthanoids. (II) `Zr^(4+)` and `Hf^(4+)` possess almos
Consider the following statements:
(I) La`(OH)_(3)` is the least basic among the hydroxides of Ianthanoids.
(II) `Zr^(4+)` and `Hf^(4+)` possess almost same ionic radii.
(III) `Cr^(4+)` can act as an oxidising agent .
which of the above statement is/ are true?
A. I and III
B. II and III
C. II only
D. I and II
4 views
1 Answers
Correct Answer - B
`La(OH)_3` is most basic. Hence, (I) is wrong (II) is correct due to lanthanoid contraction. (III) is correct because `Ce^(4+)` tends to change to stable `Ce^(3+)`.
4 views
Answered