The radius of L+ ion is 60pm and that of F- is 136 pm. Structure of Li F and coordination number is 

  1. A

    Like NaCl, C.No. = 6 

  2. B

    Like CsCl, C.No. =8 

  3. C

    Anti fluoride,C.No.=8 

  4. D

    None of these 

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    Solution:

    r+r ratio is 60136=0.441Hence LiF has NaCl structure with CN = 6. 

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