Saved Bookmarks
| 1. |
Gold (atomic radius = 0.144 nm) crystallises in a face-centred unit cell. What is the length of a side of the cell ? |
|
Answer» SOLUTION :RADIUS of gold atom r = 0.144 nm In a face-centred unit CELL. ` 4r = sqrt(2)a` `therefore a = 2sqrt(2)r` `therefore a = 2 XX 1.414 xx 0.144` nm `therefore` a = 0.407 nm |
|