Lithium forms body centred cubic structure. The length of the side of its unit cell is 351 pm. Atomic radius of the lithium will be :

  • Option 1)

    75 pm

  • Option 2)

    300 pm

  • Option 3)

    240 pm

  • Option 4)

    152 pm

 

Answers (2)

a= 351 pm

For\: bcc \: unit \: cell, a\sqrt{3}= 4r

r= \frac{a\sqrt{3}}{4}= \frac{351\times \sqrt{3}}{4}= 152pm


Option 1)

75 pm

Option 2)

300 pm

Option 3)

240 pm

Option 4)

152 pm

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