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BITSAT 2011
Exam
BITSAT
Year
2011
Subject
Chemistry
Chapter
d and f Block Elements

BITSAT 2011 · Chemistry · d and f Block Elements

Which of the following pairs has the same size?

Which of the following pairs has the same size?

Options

  1. AFe2+,Ni2+\mathrm{Fe}^{2+}, \mathrm{Ni}^{2+}
  2. BZr4+,Ti4+\mathrm{Zr}^{4+}, \mathrm{Ti}^{4+}
  3. CZr4+,Hf4+\mathrm{Zr}^{4+}, \mathrm{Hf}^{4+}
  4. DZn2+,Hf4+\mathrm{Zn}^{2+}, \mathrm{Hf}^{4+}

Correct answer

C. Zr4+,Hf4+\mathrm{Zr}^{4+}, \mathrm{Hf}^{4+}

Step-by-step solution

Due to lanthanide contraction, the size of Zr\mathrm{Zr} and Hf\mathrm{Hf} (atom and ions) become nearly similar.
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