Because of lanthanoid contraction, which of the following pairs of elements have nearly…

Chemistry · NEET · NTA Exams — d- and f- Block Elements

1. Zr (40) and Nb (41)
2. Zr (40) and Hf (72)
3. Zr (40) and Ta (73)
4. Ti (22) and Zr (40)

Answer

(B) Zr (40) and Hf (72)

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