1.

For the orthorhombic crystal system

Answer»

no two sides are EQUAL i.e. `a!=b!=C`
all CRYSTALLOGRAPHIC angles are equal to `90^(@)` i.e. `alpha=beta=gamma=90^(@)`
three kinds of unit cells are found, these are primitive, body centred and face centred
all FOUR unit cells are found.

Solution :All the four unit cells are found i.e. primitive, body centred, face centred and END centred.


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