2. why is mercury used for coating the polished
side of metals.
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2. why is mercury used for coating the polished
side of metals.
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Explanation:
Before 1940, mercury was the most commonly used metallic coating for mirrors because mercury is spread evenly over the surface of the glass and did not tarnish. This practice was eventually abandoned, because mercury seals in the toxic liquid. Today, mirror manufacturers use aluminum instead of mercury.
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