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Which of the following statement is not correct? (1) La(OH)_(3) is less basic than Lu(OH)_(3) (2) In lanthanide series ionic radius of Ln^(3+) ions decrease (3) Zn, Cd, Hg are colourless and are diamagnetic (4) Mn shows maximum oxidation state is +7 |
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Answer» Solution :Key:1 `La(OH)_(3)` is more basic than `LU(OH)_(3)`. This is because ionic SIZE of `La^(3+)` ION is more than `Lu^(3+)ion`. |
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