Copper has density of 8.94 and crystallizes with the face-centered cubic unit cell. Calculate the radius of a copper atom.

2 answers

There are 4 atoms to the unit cell so the mass of a unit cell is
4*atomic mass Cu/6.02E23 = ?
density = mass/volume
Substitute mass and density and solve for volume = ?
V1/3 = edge length = a
4r = a*21/2
Solve for r. My periodic table says Cu is 1.28 angstroms.
127.3
Similar Questions
    1. answers icon 1 answer
  1. Copper crystallizes in a face-centered cubic unitcell with an edge length of 362 pm. What is the radius of a Cu atom in pm?
    1. answers icon 1 answer
  2. Copper crystallizes in a face-centered cubic unitcell with an edge length of 362 pm. What is the radius of a Cu atom in pm? What
    1. answers icon 3 answers
    1. answers icon 2 answers
more similar questions