Which of the following pairs has the same ionic are:
Which of the following pairs has the same ionic are:
A. `Fe^(2+),Ni^(2+)`
B. `Zr^(4+),Ti^(4+)`
C. `Zr^(4+),Hf^(4+)`
D. `Zn^(2+),Hf^(4+)`
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Correct Answer - C
`Hi^(4+) and Zr^(4+)` are present in group 4 (d-block). Due to Lanthanoid contraction, these have same sizes.
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