How to Memorize the Periodic Table: Chunks, Not Rows

Published November 3, 2026 · Updated November 3, 2026 · 7 min read · by the Sakura5 team

The most reliable way to memorize the periodic table is to learn it in chunks — one period (row) or one group (column) at a time — give each chunk a short mnemonic, and test yourself by drawing a blank table from memory every few days. Reading the full table over and over feels productive, but it mostly builds recognition, not recall.

The table has 118 elements, and almost nobody needs all of them on day one. Most chemistry classes ask for the first 20 or the first 36 elements by name, symbol and position, plus a few key groups. The structure of the table — rows that fill up in a fixed pattern, columns of elements that behave alike — is the thing that makes it learnable.

This guide covers why rereading fails, how to decide exactly what you need, a six-step workflow, a worked example of one student’s two weeks before a test, the symbols that trip everyone up, and a short FAQ.

Why staring at the whole table doesn’t work

A printed periodic table is dense: a grid of boxes, each with a number, a symbol, a name and a mass. Looking at it gives you the feeling that it’s sinking in. Then a test asks for the symbol of potassium, or the element in period 3, group 16, and the feeling is gone.

• Too many facts at once. Each element carries at least three things you might be asked for: name, symbol and position. Spread across dozens of boxes, that’s far more than one sitting can hold.
• The shape is ignored. Periods 2 and 3 each have exactly 8 elements. Group 1 is a single column of reactive metals. If you learn element by element, you throw away the scaffolding the table already gives you.
• Recognition is not recall. Seeing “Na — sodium” and nodding is much easier than producing “Na” when the question only says sodium.

The fix is to break the table into pieces small enough to learn in one session and to spend most of your time retrieving, not reading.

Decide what “memorize the periodic table” means for you

Before you start, check the exact requirement. It changes the plan a lot.

• First 20 elements. Hydrogen to calcium. Common in early high school courses. Realistic in a week of short sessions.
• First 36 elements. Up to krypton, including the first row of transition metals (scandium to zinc). Plan on about two weeks.
• Key groups. Group 1 (alkali metals), group 2 (alkaline earth metals), group 17 (halogens) and group 18 (noble gases) come up constantly, so learn them top to bottom even if your list stops at 20.
• The whole table. Usually only needed for competitions or personal challenge. Same method, more chunks, more weeks.

Also check which direction you’ll be tested in. Symbol to name, name to symbol, atomic number to element, and position on a blank grid are four different skills. Practice the ones your test uses.

How to memorize the periodic table: a six-step workflow

Each session takes 15–20 minutes. You need blank paper, a pen and a timer.

1. Split the table into chunks of 8–10

Periods make natural chunks. Period 1 has 2 elements, periods 2 and 3 have 8 each, and period 4 has 18, which you can split into the first two elements, the ten transition metals and the last six. Learn one chunk per session and don’t move on until you can write it out cleanly.

2. Give each chunk one mnemonic sentence

Build a sentence whose word initials match the symbols in order. A well-known one for period 1 and 2 is Here He Lies Beneath Bed Clothes, Nothing On, Feeling Nervous — H, He, Li, Be, B, C, N, O, F, Ne. Your own sentences work better than borrowed ones because you remember making them. Silly and specific beats sensible and bland.

3. Map the table as a tree, not a grid

Put “periodic table” in the center, one branch per period, and the elements as nodes along each branch with their atomic number and symbol. Add a second set of branches for the key groups. Seeing that sodium sits on the period 3 branch and on the group 1 branch is what links position to identity. In Mindmap AI you can build this as a map and switch to the collapsible outline view to hide a branch while you quiz yourself.

4. Test from a blank page

Close everything. Write the mnemonic, then the symbols, then the names, then the atomic numbers. Draw the grid outline and fill in what you can. Mark every gap. Those gaps are the only thing you study next session. Our comparison of active recall vs rereading notes explains why this beats looking at the table again.

5. Learn the odd symbols separately

About a dozen common elements have symbols that don’t match their English names. Give them their own branch and drill them on their own (see the section below).

6. Space the reviews

Repeat the blank-page test one day, three days and a week after you first learn a chunk. Retrieval spread out over days holds up much better than a single long session, as Roediger and Karpicke’s testing-effect study showed. Old chunks get a quick pass at the start of every new session.

A worked example: the first 36 elements in two weeks

Daniel is in a tenth-grade chemistry class. His test in two weeks asks for the first 36 elements — hydrogen to krypton — by name, symbol and atomic number, plus groups 1 and 17 to the bottom of the table. On the first evening he tries a blank-page test before studying anything and gets 11 of 36 fully right, mostly the familiar ones like carbon, oxygen and iron.

He splits the work into five chunks: period 1 and 2 (10 elements), period 3 (8), the start of period 4 plus its last six (8), the ten transition metals from scandium to zinc, and the two groups. That’s one chunk every two days, with spare days for review.

Days 1–2 cover the first ten with the “Here He Lies” sentence. For period 3 (Na, Mg, Al, Si, P, S, Cl, Ar) he makes up his own: Nervous Magpies Always Sing Pretty Songs Close Around. By day 4, a blank-page test gets 18 of 18 for those chunks. The transition metals are slower; on day 8 he’s still mixing up chromium and cobalt, so he adds both to his odd-ones branch with a note on each.

He builds the tree in Mindmap AI on his iPhone and does his day-3 and day-7 reviews on the bus, collapsing one period at a time and reciting it before expanding to check. On day 12 he gets 36 of 36 and can write groups 1 and 17 in order. Total time across the two weeks is a little over four hours, in sessions of 15–20 minutes.

The symbols that don’t match the names

These come from Latin (and in one case German) names, which is why they look wrong. Learn them as a set and attach the original word to each one.

• Na — sodium (natrium) and K — potassium (kalium). Both in group 1, so learn them as a pair.
• Fe — iron (ferrum). The same root as “ferrous.”
• Cu — copper (cuprum).
• Ag — silver (argentum) and Au — gold (aurum). Two precious metals, two Latin names starting with A.
• Sn — tin (stannum) and Pb — lead (plumbum, the root of “plumber”).
• Hg — mercury (hydrargyrum, “liquid silver”).
• Sb — antimony (stibium) and W — tungsten (wolfram).

The same tree method works for other chemistry lists. If you’re moving on to ion formulas next, our guide on how to memorize polyatomic ions uses the same blank-page testing with a few naming rules on top.

FAQ

How long does it take to memorize the periodic table?

It depends on how much you need. The first 20 elements usually take about a week of 15-minute sessions, and the first 36 about two weeks. The full 118 is a project of several weeks. Short daily sessions with blank-page testing get there faster than a few long cramming sessions.

What is the easiest way to remember the first 20 elements?

Split them into three chunks: hydrogen to neon, sodium to argon, then potassium and calcium. Give the first two chunks a mnemonic sentence each, such as “Here He Lies Beneath Bed Clothes, Nothing On, Feeling Nervous” for the first ten. Then write all 20 from a blank page until you can do it twice in a row.

Should I memorize atomic masses too?

Usually not. Most tests give you a periodic table with masses printed on it, and the skill being tested is using them, not reciting them. Check your syllabus. If masses are required, learn the handful you use most, such as hydrogen, carbon, nitrogen and oxygen, rather than every value.

Do periodic table songs work?

Songs can help you recall the order of names, especially for long stretches. The weakness is that they rarely link a name to its symbol or position, so you can sing every element and still miss “what is the symbol for tin.” Use a song for order if you like it, then test symbols and positions separately.

← All articles