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Copper crystallizes in fcc with a unit cells length of 361 pm. What is the radius of copper atom?
A. |
108 pm |
B. |
127 pm |
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C. |
157 pm |
D. |
181 pm |
For FCC,
`sqrt2a=4r` (the atoms touches each other along the face -diagonal)
`r=(sqrt2a)/4=(sqrt2xx361)/4=127`pm