Although Zirconium belongs to 4d-transition series and Hafnium belongs tp 5d transition series, even then they show similar physical and chemical properties because

Both belongs to the same group of the periodic table

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Both have similar atomic radius

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Both have same numbeer of electrons

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Both belongs to d-block

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Solution

The correct option is B Both have similar atomic radius
Due to lanthanoid contraction, $Z r & H f$ shows similar properties and also have similar atomic radius due to which also they show similar Physical and chemical properties.

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Similar questions

Although Zirconium belongs to $4 d$ transition series and Hafnium to $5 d$ transition series even then they show similar physical and chemical properties because ___________.

Q. Although Zr belongs to 4d and Hf belongs to 5d transition series, but it is quite difficult to separate them. Why?

Q. Although, Zr belongs to

4 d

and Hf belongs to

5 d

transition series but it is quite difficult to separate them, why?

there is a close similarity in physical and chemical properties of the 4d and 5d series of the transition elements much more than expected on the basis of usual family relationship

Q. Due to 'lanthanide contraction', second and third row transition elements (called 4d and 5d series series respectively) have similar property/properties. These properties is/are :

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Although Zirconium belongs to 4d-transition series and Hafnium belongs tp 5d transition series, even then they show similar physical and chemical properties because

The correct option is B Both have similar atomic radiusDue to lanthanoid contraction, Zr & Hf shows similar properties and also have similar atomic radius due to which also they show similar Physical and chemical properties.

The correct option is B Both have similar atomic radius
Due to lanthanoid contraction, $Z r & H f$ shows similar properties and also have similar atomic radius due to which also they show similar Physical and chemical properties.