A solid with atoms a, b, and c arranged in a cubic lattice has the simplest formula possible: abc3.
Given that the unit cell's an atoms occupy two of its corners and one of its body centres, the b atoms occupy two corners, and the c atoms occupy four of its corners and two of its faces
There are eight corners, and each one has an atom in it.
Atomic number of a = 8 * 1/8 = 1
The centre b atom is the lone atom. So b = 1
Each of the six faces holds a c atom.
6 x 1/2 = 3 c atoms are present.
So when we combine them, we get the solid as abc3 formula.
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