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Zr(Z=40) and Hf(Z=72) have similar atomic and ionic raddi because of:
Option: 1
Belonging to same group
Option: 2
Diagonal relationship
Option: 3
Lanthanoid contraction
Option: 4
Having Similar chemical properties
Answers (1)
Zr and Hf have almost similar size. This is because of Lanthanoid contraction.
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