There is one atom per unit cell for polonium atom .
In polonium the structure is simple cubic means there are 8 corner atoms.
Unit cell is defined as the smallest repeating unit in a crystal lattice which when repeated over and over again produces the complete crystal .
The unit cell represents the shape of the entire crystal .
The density of the unit cell is the same as that of its whole lattice .
A unit cell characterized by its definite shape , its dimensions along the three edges as a, b and c . these edges may or may not be perpendicular .
There are angle between the pair of edges called interfacial angles .
There are two types of unit cell : primitive unit cell and centered unit cell .
The centered unit cell is of three types : body centered unit cell , face centered unit cell , and end centered unit cell .
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