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Grade 12Physical Chemistry

An ionic compound AB has ZnS type stucture. If the radius A+ is 22.5 pm, then ideal radius of b- will be?

Profile image of Asmita
9 Years agoGrade 12
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2 Answers

Profile image of varun
ApprovedApproved Tutor Answer9 Years ago
HELLO ASMITA,
Since ionic compound AB has ZnS type of structutre,therefore it must have tetrahedral voids for which
=>radius of cation/radius of anion = 0.225
=>A+
--------- = 0.225
   B-
 =>22.5/B- = 0.225
==>    B- = 100pm
THANK YOU 
Profile image of ankit singh
5 Years ago
FOR ZNs TYPE STRUCTURE THE COMPOUD HAVING TETRAHEDRAL VOIDS
THEREFORE R CATION/ R ANION=0.225
THEREFORE B- IS=100PM