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We have developed the Electron Configurations tool, available at http://www.minerazzi.com/tools/electron/configurations.php, as a handy tool for data miners, computational chemists, teachers and their students to easily compute electron configurations.

The tool uses Tsimmerman’s Adomah and Janet’s Left-Step versions of the periodic table which closely follow quantum mechanics and the order of electron-shell filling. It computes configurations of elements with atomic numbers ranging from 1 to 120.

The tool predicts electron configurations by reconstructing, parsing, and then reducing the configuration of the possible heaviest element predicted by Janet (Z = 120), temporarily known today as Unbinilium, Ubn. This approach selectively computes all current electron configurations (from Z = 1 to Z = 120) and can be easily modified to account for heavier elements (Z > 120) in the event that these are discovered.

Anomalous configurations, i.e. those that deviate from the predicted ones are also identified. This is done by comparing the computed configurations against those excellently documented by Eric Scerri.

PS: I spotted an error in this WikiHow article. They stated and quote:

“An electron configuration for an atom with every orbital completely filled would be written: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d107p68s2”

“Note that the above list, if all the shells were filled, would be the electron configuration for Uuo (Ununoctium), 118, the highest-numbered atom on the periodic table – so this electron configuration contains every currently known electron shell for a neutrally charged atom.”

End of the quote.

That is totally wrong. The above is the electron configuration of Z=120, not of Z=118. I wrote a comment at WikiHow pointing this out.