Silver crystallises with face-centred cubic unit cells. Each side of the unit cell has a length of 409 pm . What is the radius of an atom of silver ? (Assume that each face atom is touching the four corner atoms )

Silver crystallises with face-centred cubic unit cells. Each side of t

1.	Silver crystallises with face-centred cubic unit cells. Each side of the unit cell has a length of 409 pm . What is the radius of an atom of silver ? (Assume that each face atom is touching the four corner atoms )
Answer» SOLUTION :For face-centred cubic UNIT of an ELEMENT , `r=a/(2sqrt2)` = 0.3535 a = 0.3535 x 409 PM =144.6 pm