The crystal structure adopted by iron is...

The crystal structure adopted by iron is shown below. The distance between the nearest iron atoms is

286 pm

124 pm

143 pm

247.6 pm

Text Solution

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The correct Answer is:

BCC structure, For BCC, `r=(sqrt3a)/(4)`, distance b/w nearest heighbor = 2r
`2(sqrt(3)a)/4 = (sqrt(3)a)/2 = (1.732 xx 286)/2 = 247.6` pm

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