1.

Which of the following pairs has the same ionic are:

Answer»

`Fe^(2+),Ni^(2+)`
`Zr^(4+),Ti^(4+)`
`Zr^(4+),Hf^(4+)`
`Zn^(2+),Hf^(4+)`

SOLUTION :`Hi^(4+) and Zr^(4+)` are present in group 4 (d-block). DUE to LANTHANOID contraction, these have same sizes.


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