Solid StateHard

Question

A binary solid (A⁺ B⁻) has a rock salt structure. If the edge length is 400 pm and the radius of cation is 75 pm, then the radius of anion is

Options

A.100 pm

B.125 pm

C.250 pm

D.325 pm

Solution

For rock salt structure, a = 2 or, 400 =

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