The radius of Ag^+ ion is 126 pm while that of I^- is 216 pm. The co-ordination number of Ag in AgI is:

JEE Main Chemistry question

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The radius of ion is 126 pm while that of is 216 pm. The co-ordination number of Ag in AgI is:

(A)2
(B)4
(C)6Correct
(D)8

Answer: (C)

Solution

The radius ratio is , which falls in the range 0.414–0.732 for octahedral (6-coordinate) packing by the radius-ratio rule. This value is too high for 4-coordination (0.225–0.414) and too low for

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Question ID VK-141672