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周期表 リファレンス

周期表 リファレンス。すべての処理はブラウザ内で完結します — ファイルがサーバーにアップロードされることはありません。完全なプライバシー、登録不要、無料で利用できます。

28件中28件表示

#SymbolNameMassGroup
1HHydrogen1.008Nonmetal
2HeHelium4.003Noble gas
3LiLithium6.94Alkali metal
4BeBeryllium9.012Alkaline earth
5BBoron10.81Metalloid
6CCarbon12.011Nonmetal
7NNitrogen14.007Nonmetal
8OOxygen15.999Nonmetal
9FFluorine18.998Halogen
10NeNeon20.180Noble gas
11NaSodium22.990Alkali metal
12MgMagnesium24.305Alkaline earth
13AlAluminium26.982Post-transition
14SiSilicon28.086Metalloid
15PPhosphorus30.974Nonmetal
16SSulfur32.06Nonmetal
17ClChlorine35.45Halogen
18ArArgon39.948Noble gas
19KPotassium39.098Alkali metal
20CaCalcium40.078Alkaline earth
26FeIron55.845Transition metal
29CuCopper63.546Transition metal
30ZnZinc65.38Transition metal
47AgSilver107.868Transition metal
79AuGold196.967Transition metal
80HgMercury200.592Transition metal
82PbLead207.2Post-transition
92UUranium238.029Actinide
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このツールについて

Periodic Table Reference is a free, browser-based tool that lets you build study aids instantly — without installing software, signing up, or uploading files to any server. Everything happens locally in your browser, so your data stays on your device.

This tool is built for everyday use: from quick one-off tasks to repeated workflows. It loads in milliseconds, works offline once cached, and runs equally well on desktop, tablet, and mobile. The interface is deliberately minimal so you can focus on the result rather than learning the tool.

Common use cases include: preparing for exams with focused study sessions; building flashcards, quizzes or revision schedules; tracking progress and staying accountable; helping students learn through interactive tools. Whether you're a student, a professional, or just need a quick utility, Periodic Table Reference gets the job done in seconds.

Privacy is built in by design. Because all processing happens client-side in your browser, no analytics service, advertising network, or backend ever sees your input or output. You can verify this by checking your browser's network tab while using the tool — you'll see zero outbound requests for your data. That makes Periodic Table Reference suitable for sensitive content (medical, legal, financial) where uploading to a third-party service would be a non-starter.

Periodic Table Reference is part of ToolHub — a free, ad-free, open-access collection of 750+ in-browser utilities covering PDFs, images, text, calculators, developer tools, design, social media, education, business, health, and more.

使い方

  1. 1Open Periodic Table Reference in any modern browser (Chrome, Firefox, Safari, Edge). No installation or signup required.
  2. 2Provide your study input — paste, type, or upload depending on the tool's input panel.
  3. 3Review the result, then copy or download. All actions happen instantly in your browser.

主な機能

  • 100% client-side — your data never leaves your browser
  • Free with no signup, no email, no payment required
  • Works on desktop, tablet, and mobile (44 px tap targets)
  • Dark mode and 25-language support built in
  • Handles long lists of subjects, topics or items effortlessly

プロのヒント

  • Bookmark the tool for one-click access on your next visit — all settings save in localStorage.
  • For repeat use, make sure you commit to using it consistently — habit beats intensity so the tool runs at full speed.
  • If you find a bug or want a new feature, use the feedback form below — every suggestion is read.

よくある質問

Is Periodic Table Reference free to use?
Yes — completely free with no usage limits, no signup, no email required, and no premium tier hidden behind a paywall.
Is my data safe and private?
Yes. All processing happens in your browser via JavaScript. Your input, output, and any files you provide never leave your device — open your browser's network inspector and you'll confirm zero outbound requests carry your data.
What formats are supported?
Plain text input, numbers, dates — varies by tool.
Is there a file or input size limit?
Handles long lists of subjects, topics or items effortlessly. There's no artificial cap imposed by the tool itself.
Does Periodic Table Reference work on mobile?
Yes — the tool is fully responsive with 44 px tap targets, works on iOS Safari and Android Chrome, and supports both portrait and landscape orientation.
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