Zr (Z =40) and Hf (Z =72) have similar atomic and ionic radii because of : (A) belonging to same group (B) diagonal relationship (C) lanthanoid contraction (D) having similar chemical properties

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Question

Zr (Z =40) and Hf (Z =72) have similar atomic and ionic radii because of :

(A) belonging to same group
(B) diagonal relationship
(C) lanthanoid contraction
(D) having similar chemical properties

Prashant Kotian · Accepted Answer

Correct answer: C. Due to lanthanoid contraction Zr and Hf has similar atomic and ionic radii.

💡 Solution & Explanation