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Inorganic Chemistry

JEE Main level, single correct, medium

2 of 5

Question 2 of 5

Which pair of elements has nearly identical atomic and ionic radii due to lanthanoid contraction?

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Answer: (B) $Zr$ and $Hf$

Due to lanthanoid contraction,

4d

element

Zr

(

160\,\text{pm}

) and

5d

element

Hf

(

159\,\text{pm}

) have nearly identical radii.

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JEE Main 2025 Apr 2 Shift 1 question paper

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