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Excluding metalloid elements, which of the following BEST describes why purely metallic mixtures are created?
To reduce the damaging effects of rusting of the substance due to the engineering of a mixture that instead tarnishes when exposed to oxides.
To allow for conduction of electricity without any conduction of heat.
To allow a solid to have high tensile strength without being ductile.
To easily dissolve in water that allows for very rapid decomposition in the environment, reducing the number of metals that wind up in landfills.