Question

Copper crystallizes in fcc lattice with unit cell edge of 361 picometre the radius of copper atom is

Answer 1

For an FCC lattice, we know4r=\frac{\sqrt{2}a}{4} \times 361 pm = 127.61 pm 4r=\frac{\sqrt{2}a}{4} \times 361 pm = 127.61 pm\sim 128 pm

Option 1)

157

this option is incorrect

Option 2)

181

this option is incorrect

Option 3)

108

this option is incorrect