Periodic Table Elements 118: Symbol, Number and Category
All 118, tagged so you can drill one block at a time.
118枚のカード
収録カードを見る（30枚）
全118枚から30枚を抜粋して表示しています。
| 表 | 裏 |
|---|---|
| H | Name: Hydrogen Atomic number: 1 Category: Reactive nonmetal Group / period: 1 / 1 Used for: Ammonia synthesis and fuel cells |
| He | Name: Helium Atomic number: 2 Category: Noble gas Group / period: 18 / 1 Used for: Cryogenics and lifting gas |
| Li | Name: Lithium Atomic number: 3 Category: Alkali metal Group / period: 1 / 2 Used for: Rechargeable batteries |
| Be | Name: Beryllium Atomic number: 4 Category: Alkaline earth metal Group / period: 2 / 2 Used for: X-ray windows and aerospace alloys |
| B | Name: Boron Atomic number: 5 Category: Metalloid Group / period: 13 / 2 Used for: Borosilicate glass |
| F | Name: Fluorine Atomic number: 9 Category: Halogen Group / period: 17 / 2 Used for: Toothpaste additives and PTFE |
| Al | Name: Aluminium Atomic number: 13 Category: Post-transition metal Group / period: 13 / 3 Used for: Cans, foil and aircraft frames |
| Cl | Name: Chlorine Atomic number: 17 Category: Halogen Group / period: 17 / 3 Used for: Water treatment and PVC |
| Sc | Name: Scandium Atomic number: 21 Category: Transition metal Group / period: 3 / 4 Used for: Aluminium-scandium alloys |
| Mn | Name: Manganese Atomic number: 25 Category: Transition metal Group / period: 7 / 4 Used for: Steel hardening |
| Zn | Name: Zinc Atomic number: 30 Category: Transition metal Group / period: 12 / 4 Used for: Galvanising steel |
| Se | Name: Selenium Atomic number: 34 Category: Reactive nonmetal Group / period: 16 / 4 Used for: Photocopier drums and glassmaking |
| Y | Name: Yttrium Atomic number: 39 Category: Transition metal Group / period: 3 / 5 Used for: Phosphors and superconductors |
| Tc | Name: Technetium Atomic number: 43 Category: Transition metal Group / period: 7 / 5 Used for: Medical imaging tracers |
| Cd | Name: Cadmium Atomic number: 48 Category: Transition metal Group / period: 12 / 5 Used for: Ni-Cd batteries and pigments |
| Te | Name: Tellurium Atomic number: 52 Category: Metalloid Group / period: 16 / 5 Used for: Thin-film solar cells |
| La | Name: Lanthanum Atomic number: 57 Category: Lanthanide Group / period: — / 6 Used for: Camera lenses and catalysts |
| Pm | Name: Promethium Atomic number: 61 Category: Lanthanide Group / period: — / 6 Used for: Luminous paint research |
| Tb | Name: Terbium Atomic number: 65 Category: Lanthanide Group / period: — / 6 Used for: Green phosphors |
| Tm | Name: Thulium Atomic number: 69 Category: Lanthanide Group / period: — / 6 Used for: Portable X-ray sources |
| Ta | Name: Tantalum Atomic number: 73 Category: Transition metal Group / period: 5 / 6 Used for: Capacitors in electronics |
| Ir | Name: Iridium Atomic number: 77 Category: Transition metal Group / period: 9 / 6 Used for: Spark plugs and crucibles |
| Tl | Name: Thallium Atomic number: 81 Category: Post-transition metal Group / period: 13 / 6 Used for: Infrared optics |
| At | Name: Astatine Atomic number: 85 Category: Halogen Group / period: 17 / 6 Used for: Radiotherapy research |
| Ac | Name: Actinium Atomic number: 89 Category: Actinide Group / period: — / 7 Used for: Targeted alpha therapy research |
| Cm | Name: Curium Atomic number: 96 Category: Actinide Group / period: — / 7 Used for: Spacecraft power sources |
| Lr | Name: Lawrencium Atomic number: 103 Category: Actinide Group / period: — / 7 Used for: Research only |
| Ds | Name: Darmstadtium Atomic number: 110 Category: Transition metal Group / period: 10 / 7 Used for: Research only |
| Fl | Name: Flerovium Atomic number: 114 Category: Post-transition metal Group / period: 14 / 7 Used for: Research only |
| Og | Name: Oganesson Atomic number: 118 Category: Noble gas Group / period: 18 / 7 Used for: Research only |
このデッキについて
Learning the periodic table from a wall chart fails for a simple reason: the chart shows you everything at once, so you keep re-reading the twenty symbols you already know to reach the ones you don't. This deck puts each element on its own card — symbol on the front, then name, atomic number, category, group and period, and the one use a first course actually mentions. Every card is tagged by block, so you can run just the transition metals, just the lanthanides, or just the main group instead of the whole table. Import it and the deck joins your spaced-repetition schedule. Elements you know stretch out and drop out of sight; the ones that keep slipping come back until they stop slipping. What goes down is the number of symbols you still can't place — not the time it takes to scan past 118 cards you mostly can.
よくある質問
- Can I import the whole deck on the free plan?
- Yes. Importing a saved deck runs no new AI generation and spends no AI credits, so the free plan imports every card. You can study, edit and delete them afterwards.
- Will importing it twice create duplicates?
- No. Cards you already have are skipped and only cards added in a revision come through. Including re-imports after deleting it, one official deck can be imported three times per account.
- Does it work on the web and in the mobile app?
- Yes. The deck is added to your account, so the web app, the iOS app and the Android app all show the same cards and the same progress.
- Can I edit the cards after importing?
- Yes. Once imported they are your cards: edit either side, delete the ones you do not need, retag them, or move them into another deck.
- What is on each card?
- Symbol on the front; name, atomic number, category, group and period, and one representative use on the back. The 118 cards are tagged 50 main-group, 38 transition metals, 15 lanthanides and 15 actinides, so each block can be drilled on its own.
- Which way round should I study it?
- The card shows the symbol and asks for everything else, because that is the direction reading a formula demands. If you want name-to-symbol as well, edit a card and swap the sides, or duplicate the deck and swap them in bulk — both directions are yours once the deck is in your account.
Compiled 2026-08-17 from the standard element names, symbols and atomic numbers. Every card is written by Memly. Uses are the representative application named in introductory courses, not handling guidance: several of these elements are toxic or radioactive, and nothing here is a safety instruction. Elements 99 and above are marked research only rather than given an invented application.