As of June 2020, all 118 chemical elements have been found, of which 92 are of natural origin (of which 88 are easy to find on Earth and the remaining 6 are very is rare), the remaining 24 elements are man-made. The first man-made element was technetium found in 1937. All man-made elements are radioactive with a short half-life so they cannot exist naturally on today’s Earth due to radioactivity. took place right from the formation of the Earth.
The lightest elements are hydrogen (there are three types of atoms: hydrogen, deuterium and tritium), which were the first to appear in the Big Bang. All heavier elements are found or produced naturally or artificially through a variety of methods of nuclear synthesis.
What is Periodic table of the elements I wear this mask periodically face mask
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