Copper crystallises in fcc lattice with a unit cell edge of 361 pm. Th – InterviewSolution

1.	Copper crystallises in fcc lattice with a unit cell edge of 361 pm. The radius of copper atom is :
Answer» 108pm 128 PM 157 pm 181 pm SOLUTION :`4r = sqrt(2) a ` `R = ( sqrt( 2) a )/( 4) = ( sqrt( 2) XX 361 )/( 4) = ( 1.414 xx 361)/( 4)` `= 127.61~~ 128`pm

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