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Timeline for Element with No Proton?

Current License: CC BY-SA 3.0

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Feb 6, 2016 at 9:10 comment added Ivan Neretin It's but a matter of convention. You may consider there is an element with atomic number 0 (BTW, recently a tetraneutron has been supposedly discovered, which would be another isotope of it). Instability is not a big deal; a good many respectable elements are unstable. But it would be an element without chemistry.
Jun 1, 2015 at 9:29 vote accept Chinmay Chandak
May 31, 2015 at 17:40 answer added bon timeline score: 8
May 31, 2015 at 17:40 comment added Wildcat No, that is not a chemical element, it is an isolated neutron with a lifetime of few minutes. It undergoes beta decay into a proton, an electron and an antineutrino.
May 31, 2015 at 17:26 history asked Chinmay Chandak CC BY-SA 3.0