The radius of Ag+ ion is 126pm and of I- ion is 216pm. The coordination number of Ag+ ion is:
(a)2
(b)3
(c)6
(d)8
(c)6
Explanation:
The radius of Ag+ ion is 126pm and of I- ion is 216pm.
The coordination number of Ag+ ion is ρ = r{caton/ranion}
= r{caton/ranion}
= `126/261` = 0.58
The radius ratio is in the range 0.414 - 0.732, so the coordinate number is 6 or 4 according to the table. Since none of the options is 4. so, the answer is 6.
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