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What is the heaviest metal?

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Quick Answer

Ununseptium, element 117, is the heaviest artificial metal discovered when measuring by atomic weight, as of 2014. Uranium, element 92, is the heaviest element that occurs naturally on Earth in any quantity, and osmium, element 76, is the densest metal, with a density of about twice that of lead.

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Full Answer

The existence of ununseptium was confirmed by a team of scientists early in 2014. This name is a temporary placeholder for a permanent name that will be determined when the International Unions of Pure and Applied Physics and Chemistry confirm the discovery and add the element to the periodic table of elements.

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