Betão

betão is an offline reference: chemical elements and the periodic table.

• Elements 1 to 36 — 36 elements
• Notable elements — 16 heavier elements
• Groups and trends — 14 topics
• Glossary — 20 terms
• Quiz — questions built from the same entries
• Favorites — keep the entries you return to

betão entry has a short summary line and a few paragraphs of description. Search works inside each section. Nothing is downloaded: all 66 entries ship inside the app and work without a connection.

betão covers the first thirty-six elements in order, from hydrogen to krypton, a selection of sixteen notable heavier elements from strontium to plutonium, and fourteen topics on the families and trends of the periodic table. Each element entry gives its symbol, atomic number, atomic mass and category, then its discovery, properties, occurrence, uses and one detail worth remembering.

betão was compiled from standard chemistry references, IUPAC data for atomic masses and published histories of element discovery. Elementis is a general reference for students and curious readers, not a laboratory manual or a source of safety guidance; atomic masses are rounded, and values for elements without stable isotopes are those of their longest-lived isotope.