THE PERIODIC TABLE

all 118 elements: symbol, atomic number and IUPAC atomic weight in every cell — blocks in colour, lanthanoids and actinoids offset below

Built as a memo rather than a table: the thing worth hanging it up for reads across the room, with the full reference in smaller type below it.

Three sizes in one archive — from a sheet on the fridge to a poster on the wall.

Formats: A4 · A3 · A2
What you get: Print-ready PDFs, one per size, with every letterform converted to outlines — nothing to install, nothing to shift.
Subject: science · school · reference · classroom

Atomic weights are verbatim from IUPAC/CIAAW “Abridged Standard Atomic Weights 2024”. A dash marks an element with no standard atomic weight. The layout — 18 groups and 7 periods with rows 57–71 and 89–103 offset — follows the IUPAC table. Checked 2026-08-13.

THE WEIGHT BREAKS RANK

The table is ordered by atomic number, and atomic weight disagrees with it exactly four times: argon outweighs potassium (39.95 versus 39.098), cobalt outweighs nickel (58.933 versus 58.693), tellurium outweighs iodine (127.60 versus 126.90), thorium outweighs protactinium (232.04 versus 231.04).

It is nuclear charge, not mass, that lines the table up: were it ordered by weight, tellurium would swap places with iodine — and drop out of the column of its chemical kin, oxygen, sulfur and selenium.

On the sheet

Atomic weights are verbatim from IUPAC/CIAAW “Abridged Standard Atomic Weights 2024”. A dash marks an element with no standard atomic weight. The layout — 18 groups and 7 periods with rows 57–71 and 89–103 offset — follows the IUPAC table. Checked 2026-08-13.
Colour carries meaning, but meaning never rests on colour alone — the sheet reads in black and white.
Nothing about how it was made: the sheet carries only what the reader needs.

Printing

Three sizes in the archive: A4 — 210×297 mm, A3 — 297×420 mm, A2 — 420×594 mm.
All text is converted to outlines. No fonts to install, and nothing shifts on another machine.
White background and sparing fills — it prints on a home printer without draining the cartridge.
Margins of at least 10 mm: a home printer cannot print to the edge.
No stroke thinner than 0.3 mm, so nothing disappears in print.

Why the numbers can be trusted. Every countable number here is computed from data rather than typed in, and the sheet must pass 9 independent checks before it is allowed to build — how many items there are, the order they come in, and the claim in the highlighted box itself. If one fails, there is no file.

THE PERIODIC TABLE

THE WEIGHT BREAKS RANK

On the sheet

Printing

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