The same thing could have happened with these superheavy elements, but super mass dense heavy elements sink into ground and are eliminated from near the Earth’s surface by the subduction of tectonic plates. Many scientists believe that gold and other heavy metals were deposited on Earth’s surface after asteroids collided with the planet. It’s possible that the actual range is up to 40% higher. However, in our calculations, we used a conservative assumption about the mass of atomic nuclei. Once we knew it worked, we used the model to calculate the density of elements with 164 protons, and other elements in this island of stability.īased on our calculations, we expect stable metals with atomic numbers around 164 to have densities between 36 to 68 g/cm 3 (21 to 39 oz/in 3). We first applied this model to atoms with known densities and calculated their chemical properties. This model works well for large atoms, particularly metals that are laid out in a lattice structure. To figure out the mass density and other chemical properties of these elements, my research team used a model that represents an atom of each of these heavy elements as a single, charged cloud. And once we had an idea about their density, we could get a better sense of where these elements might be hiding. This property could tell us more about how the atomic nuclei of these elements behave. Calculating densityįrom the outset, my team wanted to figure out the mass density of these superheavy elements. We also need to know what properties they have, like their mass densities. To narrow down the search, we need to know what sort of natural processes could produce these elements. Since heavy elements are difficult to make in the lab, physicists like me have been looking for these elements everywhere, even beyond the Earth. Marilyn Chung, Lawrence Berkeley National Laboratory Scientists at Lawrence Berkeley National Laboratory have constructed experiments that can weigh superheavy elements.
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