periodic-table-cli

period-table-cli is a console‑based application that renders the full periodic table of the 118 known elements. Users navigate the table with arrow keys, selecting an element to view a panel of 22 data points, its family, and electron configuration. The interface also allows browsing by element families and electron shells, highlighting related elements and showing descriptive text.

The tool includes an incremental search mode that matches element names, symbols, atomic numbers, family names, and electron configuration labels. Typing initiates the search, and results can be navigated with the arrow keys and confirmed with Enter. A set of twenty display modes can be cycled forward or backward using the slash and backslash keys, providing color‑coded views of families, electron configurations, and standard states.

It runs on Node.js 12+ without external dependencies, can be executed via npx or a global npm install, and requires a terminal supporting 256 colors with a minimum size of 156 × 46 characters. A Python version is also available.