Question:
Which of the following pairs has the same size?
Which of the following pairs has the same size?
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Lanthanide contraction equalizes sizes of 4d and 5d elements.
Updated On: Mar 18, 2026
- Fe²⁺, Ni²⁺
- Zr⁴⁺, Ti⁴⁺
- Zr⁴⁺, Hf⁴⁺
- Zn²⁺, Hf⁴⁺
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Lanthanide contraction. Zr and Hf have similar radii due to contraction.
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