NH_(4)^(+)and Br^(-) " ions" have ionic radii of 143 pm and 196pm respectively. The coordination number of NH_(4)^(+) "ion in" NH_(4)Br is

NH_(4)^(+)and Br^(-) " ions" have ionic radii of 143 pm and 196pm resp

1.	NH_(4)^(+)and Br^(-) " ions" have ionic radii of 143 pm and 196pm respectively. The coordination number of NH_(4)^(+) "ion in" NH_(4)Br is
Answer» Solution :`R(NH_(4)^(+))//r(Br^(-))=143//196=0.730" which lies in the RANGE "0.414-0.732 therefore" COORDINATION NUMBER "=6`