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D and F Block Elements question

2015 · Q89
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D and F Block Elements question

2015 · Q89

NEETChemistryD and F Block ElementsMCQ+4 / −1
Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers)
  1. A
    Zr(40) and Hf(72)
  2. B
    Zr(40) and Ta(73)
  3. C
    Ti(22) and Zr(40)
  4. D
    Zr(40) and Nb(41)
View written solutionFree

Correct answer: A

Because of the lanthanoid contraction Zr (atomic radii 160 pm) and Hf (atomic radii 158 pm) have nearly same atomic radii.

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