Electron configuration of every element in the periodic table:Biochemhelp
Measuring the sky, the handy way. Source: Free Astronomy Teaching Resources (Starry Night) via scienceisbeauty
Eadie's Periodic Electron Configuration 2014
That is the conclusion of physicists working on the Borexino experiment in Italy, who have been searching for evidence that the electron decays to a photon and a neutrino; a process that would violate the conservation of electrical charge and point towards undiscovered physics beyond the Standard Model. If it were to decay, energy conservation means that the process would involve the production of lower-mass particles such as neutrinos.