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In total there are 118 elements known or predicted to exist, and they appear on the modern Periodic Table.

Only 114 of the elements are named, having been fully authenticated by isolation, or by detection of decay products. The others are given provisional (numerical) names with their atomic number, but no atomic weight. Around 98 elements occur naturally in one or more isotopes, and about 28 have to be synthetically produced (man-made).

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9y ago

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