What group does not exist in nature and synthetic on the periodic table

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Transuranic elements can be artificially generated synthetic elements, via nuclear reactors or particle accelerators.

There are 118 elements in the periodic table, out of which 92 are natural elements and the remaining are synthetic elements. Technetium (atomic number 43) was the first synthetic element discovered, that filled the mysterious gap between the elements, Molybdenum (atomic weight 42) and Ruthenium (atomic weight 44) in the periodic table. Promethium (atomic number 61), Astatine (atomic number 85), Francium (atomic number 87) and the transuranium elements constitute the synthetic elements. Transuranium elements are those elements whose atomic number is greater than Uranium (atomic weight 92). Here's the list of all the synthetic elements.

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