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Zr and Hf have almost equal …

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Zr and Hf have almost equal atomic and ionic radii because of A. Diagonal relationship B. Of lanthanoid contraction C. Of actinide contraction D. Both belong to f block of elements.

Posted by Vicky Wani 3 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 3 years, 11 months ago

ANSWER: B. Of lanthanoid contraction
This is because of poor screening effect by 4f electrons,which lead to the lanthanoid contraction.Hence,is the reason of Zn and Hf have almost equal atomic size.

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ANSWER

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