How many time atoms are in one unit cell...

How many time atoms are in one unit cell of polonium ?

`4`

`1`

`2`

`5`

Text Solution

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The correct Answer is:

Polonium a radioactive element (At .no. `84`) crystallizes in primitive cubic lattice.In primitive -cubic unit cell there is an atom at each of the eight corners.
When unit cell are stacked together, each cornor atom is shared by eight cubes so that only `1//8` of each atoms "belongs" to a given unit cell. Thus there is `1//8 xx8=1` atom per unit cell.

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