The unit cell of aluminium is a cube with an edge length of 405 pm. The density of aluminium is 2.70 g cm –3. What is the structure of unit cell of aluminium?

density 3 23 3 8 27 1 2.7 6.023 10 4.05 10 A ZM Z N a x >> x x x x 23 24 2.7 6.023 10 66.43 10 27 1 2.7 6.023 66.43 27 10 6.023 66.43 4 100 Z Z Z Z fcc >> x x x x x x x x x x >> >>