Engineering Materials
White metal contains

88% copper and 10% tin and rest zinc
63 to 67% nickel and 30% copper
Silver and chromium
Alloy of tin, lead and cadmium

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Engineering Materials
The unit cells

All of these
May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice
Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal
Have the same orientation and their similar faces are parallel

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