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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Solid State

NTA Abhyas 2020 · Chemistry · Solid State

The radius ratio of KF is 0.98 . The structure of KF is of the type

The radius ratio of KF\text{KF} is 0.980.98. The structure of KF\text{KF} is of the type

Options

  1. ANaCl\text{NaCl}
  2. BZnS\text{ZnS}
  3. CCsCl\text{CsCl}
  4. DGraphite

Correct answer

C. CsCl\text{CsCl}

Step-by-step solution

As r+r−\dfrac{{r}_{+}}{{r}_{-}} lies in the range 0.732−1.0000.732 - 1.000. Hence the coordination number is 8 and crystal is of CsCl\text{CsCl} type.
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