# PeriodicTableOfElements.org

8 Hacker News commenters recommended PeriodicTableOfElements.org and 5 criticized it, November 2025 to November 2026. It was recommended in 1 of 13 months.

**Verdict:** Praised as a beautiful, interactive periodic table that can be embedded in educational sites; the most common caveat is poor mobile usability.

## Why people recommend it

- Useful for teaching and science (3 comments): "Could see this being useful embedded in LMS platforms or educational sites via iframe." ([source](https://news.ycombinator.com/item?id=47561455)) "Oh perfect timing, my son was asking me what that table was" ([source](https://news.ycombinator.com/item?id=47570726)) "Needs this! Highly relevant for us geochemists" ([source](https://news.ycombinator.com/item?id=47560858))
- Beautiful, clear visual design (2 comments): "Beautiful. Another approach to visualizing the discovery of elements would be a "time travel" feature" ([source](https://news.ycombinator.com/item?id=47562333)) "I like that you've chosen to use an actual element for the example / explainer." ([source](https://news.ycombinator.com/item?id=47564583))

## What people warn about

- Hard to use on mobile (4 comments): "On mobile, it's quite hard to hit the X to close an element description." ([source](https://news.ycombinator.com/item?id=47561579)) "Tooltip positioning is poor. Also colours are hard to distinguish and layout of table could be better in mobile." ([source](https://news.ycombinator.com/item?id=47561068)) "Stupid bug on Android Firefox. Scrolling to the side opens description" ([source](https://news.ycombinator.com/item?id=47563252))
- Cluttered, worse than before (2 comments): "Wasn't so cluttered before — the elements were squares (not tallcats)." ([source](https://news.ycombinator.com/item?id=47564096)) "you made it worse (visually)" ([source](https://news.ycombinator.com/item?id=47564011))

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## Cite as

Hacker Approved, "PeriodicTableOfElements.org", https://hackerapproved.com/p/periodictableofelements-org/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).