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Periodic Table

Tap any element to see how it bonds, where you meet it in the games, and the concept pages that explain it. Need paper? Free printable PDFs.

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Alkali metal6
Alkaline earth metal6
Transition metal38
Post-transition metal11
Metalloid7
Nonmetal7
Halogen6
Noble gas7
Lanthanide15
Actinide15

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Metalloid

The diagonal staircase between metals and nonmetals. Semiconductor behavior: the basis of modern electronics.

Worth knowing

  • Properties intermediate between metals and nonmetals.
  • Silicon and germanium are the workhorse semiconductors of every chip in your phone.
  • Boron and silicon are network- solids: hard, high-melting, brittle.

Examples

BSiGeAsSb

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Turn these elements into a game

Bond Forge is free to play with a starter set of elements, no account needed.

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This reference is free for teachers and students to use and share under the CC BY-NC-ND 4.0 license. Licensing details