NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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Which one of the following pairs of elements is called ‘chemical twins’ because of their very similar chemical properties?

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Correct option: D

Hf and Zr

Option D (Hf and Zr) is correct because Hafnium and Zirconium have very similar ionic radii and chemical properties due to the lanthanide contraction.

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