Because of lanthanoid contraction,which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers)
- A$Zr(40)$ and $Hf(72)$
- B$Zr(40)$ and $Ta(73)$
- C$Ti(22)$ and $Zr(40)$
- D$Zr(40)$ and $Nb(41)$
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