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| 1. |
Zirconium (Zr) belongs to. ‘4d and Hafnium (Hf) belongs to 5d transition series: It is difficult to separate them. Explain. |
| Answer» Solution :DUE to lanthanoid contraction, the atomic radii of Zr and Hf are nearly the same. They also have SIMILAR outer electronic CONFIGURATION. So Zr and Hf SARE very closely related in properties. So they OCCUR together and it is difficult to separate them. | |