
Atomic - Periodic Table
Periodica - Periodic Table
Periodic-table.io
Periodic Table
Kalzium
Periodic Table of Elements
Gnome Chemistry Utils
Interactive periodic table with dynamic layouts showing names, electrons, oxidation, trend visualization, orbitals, isotopes, and compound search. Full descriptions from write-up sources.

LeetCode
Exercism
HackerRank
Codewars
CodeSignal
CodinGame
CodeCombat
Project Euler is a series of challenging mathematical/computer programming problems that will...

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Based on our record, Project Euler seems to be a lot more popular than Ptable. While we know about 415 links to Project Euler, we've tracked only 29 mentions of Ptable.
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PTable Review Final
Project Euler Challenges 1–4 - Coding Challenges with Florin
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Project Euler provides a large collection of challenges in the domain of computer science and mathematics. The challenges typically involve writing a small program to figure out the solution to a clever mathematical...
If you are studying algorithms and computer programming, chances are you’ve heard of Project Euler. A collection of mathematical problems made for problem solvers who are interested to combine mathematics and...
Recommendations tracked on public social media and blogs since March 2021.


Https://ptable.com/#Electrons/HOAO Shows the highest occupied atomic orbital in full 3D you can rotate. Select any slot in the Hund diagram to see that orbital instead. - Source: Hacker News / over 2 years ago
Ptable renders them with WebGL from the quantum numbers using the Schrodinger equation, wrapping a threshold density of the generated point cloud with a surface. https://ptable.com/#Electrons/HOAO. - Source: Hacker News / almost 3 years ago
I was frustrated by the +4 oxidation state as well, but ptable.com says they exist based on the electrons tab. Probably only exists with fluorine, and maybe oxygen, at nonstandard temperature and pressures, but I honestly don't know. Source: almost 4 years ago
Let's hope this is going to help me solve some more Project Euler [1] problems! [1] https://projecteuler.net/. - Source: Hacker News / 6 months ago
Https://projecteuler.net/ for "Thinker" brain food. (it still has the issue of not being a pragmatic use of time, but there are plenty interesting enough questions which it at least helps). - Source: Hacker News / 9 months ago
I have a Project Euler (https://projecteuler.net/) account. Though I do not register at all on the leader board I will sometimes work obsessively on a problem just to make one of the level icons light up for me. There is not really... - Source: Hacker News / 11 months ago
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