Name the parameters that characterise a unit cell .

Explanation

A unit cell is characterised by
i) its dimensions along the three edges , a, b, and c .
ii) angles between the edges , `alpha` (between b and c) `beta` (between a and c ) and `gamma` (between a and b) .
Thus , a unit cell is characterised by six parameters a , b , c, `alpha , beta and gamma` .
Illustration of parameters of a unit cell :