Periodic Table (PSE) — Tips & Tricks

Back to the overview: Periodic Table (PSE) · Open the tool live: www.jpkc.com/tools/pse/

The manual explains every feature, the examples show the lookup paths. This page is about what both assume but rarely spell out: how to find things faster, how to read the data correctly, and where the tool's limits are.

Search and filter faster

The search knows four ways to the same element. It checks the English name, the German name, the symbol, and the atomic number — simultaneously and regardless of the selected language. So you don't have to switch to German first to find "Sauerstoff"; even in the English view the German name hits. The fastest input is usually the symbol (Fe, Au, W) or the atomic number.
Search and category filter act in combination. The two together combine with logical AND. That's useful for narrowing down a class — "all transition metals with a 'c' in the name" — but also a pitfall: if an expected element doesn't show up, often an old category filter is still active. When in doubt, press the × reset.
Reset clears both at once. The × button next to the search field wipes the search text and the category filter together. It's only active while something is filtered — if it's greyed out, the table is already in its full state.
The legend isn't just decoration. Each color entry is a filter. One click on "Halogens" shows you immediately which elements belong to it — faster than hunting them down one by one in the grid.

Read the data correctly

Temperatures are given in Kelvin and Celsius. The detail view shows melting and boiling point in both units side by side. So there's nothing to convert — just make sure you read the right one.
Square brackets on the atomic mass are intentional. A mass like [267] (instead of 267) means the element has no stable natural isotope; the value given is the mass number of the most stable known isotope. This applies to the radioactive and superheavy elements.
An em-dash means "not defined". When you see "—" for melting point, boiling point, density, or electronegativity, the value is unknown or not meaningfully stated for that element — typical for the superheavy elements at the end of the table and for the electronegativity of most noble gases (except krypton and xenon). It's not a flaw in the table.
The state of matter is for room temperature. The colored dot on the tile (and the "State (25°C)" field in the detail view) refers to the state at around 25 °C. "Unknown" mostly applies to the superheavy elements, whose state hasn't been experimentally confirmed.
The block derives from the category. S, P, D, and F block follow directly from the element category (f for lanthanides/actinides, d for transition metals, s for alkali/alkaline earth metals plus helium, otherwise p). Useful for understanding the structure of the periodic table.

Use language cleverly

The PSE starts in English. On the very first visit (before the first toggle) the table is English. If you need German names, click the DE button once — after that the tool remembers your choice locally in the browser.
The button label shows the target, not the current state. "DE" on the button means: click here to switch to German. When the table is already in German, the button reads "EN". Mix that up and you toggle one time too many.
Both language names are searchable at the same time. Handy for mixed classes or bilingual work: whether someone types "Tungsten" or "Wolfram", both find the same element — without switching language first.

Pitfalls

It's a reference work, not a calculator. The PSE provides properties per element but doesn't compute: no molar mass of compounds, no reaction equations, no stoichiometry. For those tasks it's the data source, not the tool.
No full isotope list. There's one atomic mass per element, not a breakdown of all isotopes. The square brackets only point to the most stable isotope.
No direct link to an element. You can't share a URL that opens with "iron" showing — the state (language, filter, opened element) lives in the browser, not in the address. Better to point to the tool plus "search for Fe".
Lanthanides and actinides are relocated. If you look for them at position 3 of periods 6 and 7, you'll only find placeholder tiles ("57–71" and "89–103"). The elements themselves sit as two f-block rows below the main table — the usual textbook layout.
Scroll on narrow screens. The 18-column grid is wider than a phone display; the table is horizontally scrollable. If elements seem "missing" on the right, just swipe sideways.

What the tool is not — and where to go next

The PSE is deliberately lean: a fast, offline-capable, privacy-friendly reference with no account and no server. It replaces no chemistry learning system and no calculator — it answers "What data does element X have?" reliably and instantly.

If you want to work further with the element data, other JPKCom tools fit in:

Colors — if you want to reuse the PSE's ten category colors in your own teaching or material graphics: color picker, gradients, and palettes.
Info Tools — another compact reference from the JPKCom toolbox when you need browser or system information.

More context: the overview for the big picture, the manual for all data and features, and the examples for the step-by-step paths. You can try it all directly in the tool.