An element has a body-centered cubic (BCC) structure with a unit cell edge length of 288 pm. How many unit cells and atoms are present in 200 g of the element?
a) 2.20 × 10²³ unit cells, 4.41 × 10²³ atoms
b) 4.41 × 10²³ unit cells, 8.82 × 10²³ atoms
c) 8.82 × 10²³ unit cells, 1.76 × 10²⁴ atoms
d) 1.76 × 10²⁴ unit cells, 3.52 × 10²⁴ atoms
