elemental_properties_master.xlsx

Merged convenience table of all elemental properties in the accompanying CSV archive: one sheet with 15 rows (elements) × 18 property columns, units in the headers; a second sheet (column_key) maps every column to its source CSV file, unit, and role in the feature-engineering pipeline. Blank cells indicate the element is absent from that source table (H appears only in the electrode-potential data, Pt only in the hydrogen-adsorption data). Provided for human inspection and reuse; the individual CSV files in the archive are the authoritative inputs read by the notebooks.