Periodic Element Generator

Generates a random chemical element from the periodic table, with its symbol and atomic number — useful for chemistry practice or a quick classroom prompt. Eighteen common elements, from hydrogen to uranium.

Seed (optional)

The same word, at the same settings, gives the same result. It goes into the address when you generate, so a copied link opens with the word in the box. A seed is for repeatability, not secrecy.

Don't repeat what I've already seen

Your result will appear here.

What this generator does

Picks one of eighteen familiar elements at random, for a research task or a quiz. Each of the eighteen is equally likely; the other hundred of the periodic table are not on the list.

What you'll get

This generator draws from a hand-checked list of 18 entries. Here is a spread of 6 of them, so you can see the style before you generate:

Hydrogen (H, atomic number 1)
Nitrogen (N, atomic number 7)
Sodium (Na, atomic number 11)
Sulfur (S, atomic number 16)
Zinc (Zn, atomic number 30)
Mercury (Hg, atomic number 80)

A fixed sample of the list, not a live draw — your own results are picked at random from all 18, without repeating until the list runs out. IUPAC periodic table of the elements (element names, symbols and atomic numbers are standard scientific nomenclature). Last reviewed 2026-08-03.

How to use this tool

Press generate for an element.
Use it for practice, or generate again for a different one.

Common use cases

Chemistry classroom practice
Quiz or flashcard prompts
General science trivia

How this generator works

Draws one of eighteen elements, each returned with its symbol and atomic number together — sodium always comes back as 'Sodium (Na, atomic number 11)', never the name alone. A seed word brings the same element back for a repeated flashcard set. Seeding trades the secure draw for a repeatable, non-cryptographic sequence, which is what a worksheet needs.

Limitations and good to know

Eighteen elements is a small, familiar subset of the periodic table's 118 — mostly ones taught at school level, not the full table including lanthanides and actinides.
No group, period or electron configuration is given, only the name, symbol and atomic number; a deeper chemistry task needs a periodic table alongside this.

Practical tips

For a class research task, generate one per pupil in advance so the well-known elements do not all go first.
Ask for the group and period as well as the name; that is where the periodic table's structure actually lives.

Entries are chosen with your browser's cryptographic random number generator, so every entry on the list is equally likely. How Generate Random works.