German silver alloy contains , ,and nickel.

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Detailed Solution

concept - Copper, zinc and nickel are the main constituents of the alloy german silver. Alloys are considered homogeneous mixtures of two or more elements. They are also called solid solutions.
Alloys are prepared to improve the properties of metals. Some alloys and their compositions are-

Alloy	Composition
Brass	Cu + Zn
Bronze	Cu +Sn
Stainless steel	Fe +Cr + Ni + C
Solder	Pb + Sn
German silver	Cu + Zn + Ni

Thus, German silver contains copper, zinc, and nickel with the composition of 25-30%, 25-35%, and 10-15% respectively. German silver is widely used for its hardness, toughness and resistance to corrosion for items such as tableware (commonly silver-plated), marine fittings and plumbing fittings. Due to its high electrical resistance, it is also used in heating coils.
Hence, the answer is copper and zinc.

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