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| Q. |
Which metal is heaviest - |
| A. | osmium |
| B. | mercury |
| C. | iron |
| D. | nickel |
| Answer» A. osmium | |
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Explanation: I assume by "heaviest," you mean "densest;" in that case, the densest chemical element is osmium (which is a metal). Osmium has a density of around 22 grams per cubic centimeter. |
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