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Periodic table printable
All 118 elements on one landscape US Letter sheet, each with its atomic number, symbol, name and atomic mass, shaded by type: alkali metals, noble gases and the rest, with a key. The lanthanides and actinides sit in the two rows below, as on most classroom charts.
Names, masses and types come from PubChem, the National Institutes of Health chemistry database, and are read from its file at build time rather than typed in. The blank table keeps the atomic numbers so students can fill in the symbols.