Although zirconium belongs to 4d transition series and hafnium to 5d transition series even then they show similar physical and chemical properties because …….. .A. both belong to d-blockB. both have same number of electronsC. both have similar atomic radiusD. both belong to the same group of the periodic table.

Although zirconium belongs to 4d transition series and hafnium to 5d t

1.	Although zirconium belongs to 4d transition series and hafnium to 5d transition series even then they show similar physical and chemical properties because …….. .A. both belong to d-blockB. both have same number of electronsC. both have similar atomic radiusD. both belong to the same group of the periodic table.
Answer» Correct Answer - C Due to lanthanoid cantraction Zr and Hf have nearly equal size.

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