Periodic System for Chemists

Your periodic table, always with you.

Use it offline. Find elements quickly. Keep favorites and personal notes on iPhone and iPad.

Metalloids

Elements with properties intermediate between metals and nonmetals. Important in semiconductor technology.

Discovery Period: 17th to 20th century

Characteristics

  • • Semiconducting properties
  • • Brittle solid structure
  • • Intermediate electronegativity
  • • Form amphoteric oxides
  • • Used in electronics
  • • Can act as metals or nonmetals

Elements (7)

5
B
Boron
14
Si
Silicon
32
Ge
Germanium
33
As
Arsenic
51
Sb
Antimony
52
Te
Tellurium
84
Po
Polonium

iPhone & iPad

Your periodic table, always with you.

  • Access element data offline, in the lab or in class.
  • Find elements quickly by name, symbol, or atomic number.
  • Save favorite elements and add your own notes.
Published App Store screenshots: periodic table, element details, and search (English).