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version](https://badge.fury.io/js/%40exabyte-io%2Fperiodic-table.js.svg)](https://badge.fury.io/js/%40mat3ra%2Fperiodic-table)\n[![PyPI version](https://badge.fury.io/py/mat3ra-periodic-table.svg)](https://badge.fury.io/py/mat3ra-periodic-table)\n[![License: Apache](https://img.shields.io/badge/License-Apache-blue.svg)](https://www.apache.org/licenses/LICENSE-2.0)\n\n# Periodic Table\n\nData about chemical elements arranged in JSON format. The module also contains modules for accessing\ndata in both Python and JavaScript/TypeScript.\n\n## 1. Installation\n\n### 1.1. JavaScript\n\nThe package can be installed from NPM as follow:\n\n```bash\nnpm install @mat3ra/periodic-table\n\n```\n\n### 1.2. Python\n\n```bash\npip install mat3ra-periodic-table\n\n```\n\n\n## 2. Usage\n\n### 2.1. JavaScript\n\n```javascript\nimport {PERIODIC_TABLE, ChemicalElement} from \"@mat3ra/periodic-table\";\n\nconsole.log(PERIODIC_TABLE.H);\n\nconst li = new ChemicalElement(\"Li\");\nconsole.log(li.atomicRadiusIn(\"bohr\"));\n```\n\n### 2.2. Python\n\n```python\nfrom mat3ra.periodic_table import PERIODIC_TABLE\nfrom mat3ra.periodic_table.bonds import ELEMENT_BONDS\nfrom mat3ra.periodic_table.colors import ELEMENT_COLORS\n\nassert PERIODIC_TABLE[\"H\"][\"name\"] == \"Hydrogen\"\nassert PERIODIC_TABLE[\"H\"][\"atomic_radius_pm\"] == 25\n\nbond = next(b for b in ELEMENT_BONDS if b[\"elements\"] == [\"H\", \"O\"])\nassert bond[\"energy\"][\"value\"] == 4.75721615\nassert bond[\"energy\"][\"units\"] == \"eV\"\nassert bond[\"length\"][\"value\"] == 0.96\nassert bond[\"length\"][\"units\"] == \"angstrom\"\n\nassert ELEMENT_COLORS[\"H\"] == \"#FFFFFF\"  # white\n```\n\n\n## 3. Atomic Properties\n\n- `name`: element name\n- `symbol`: element symbol\n- `atomic_number`: atomic number\n- `atomic_mass`: atomic mass in amu\n- `atomic_radius_pm`: empirical atomic radius in pm by Slater (doi: [10.1063/1.1725697](https://doi.org/10.1063/1.1725697))\n- `covalent_radius_pm`: covalent radius \"2008 values\" (doi: [10.1039/b801115j](https://doi.org/10.1039/b801115j))\n- `van_der_Waal_radius_pm`: van der Waals radius (doi: [10.1021/jp8111556](https://doi.org/10.1021/jp8111556), [10.1021/j100785a001](https://doi.org/10.1021/j100785a001))\n\n\n## 4. Notes\n\n- Colors are in CPK convention\n\n\n## 5. Contributions\n\nThis repository is an [open-source](LICENSE.md) work-in-progress and we welcome contributions.\n\n\n## 6. ToDos\n\n- Add pre-commit hook to run `python build_modules.py` before commit\n\n\n## 7. Links\n\n1. Periodic table original source: GPeriodic, Open source Linux software: [link](http://gperiodic.seul.org/)\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmat3ra%2Fperiodic-table","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmat3ra%2Fperiodic-table","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmat3ra%2Fperiodic-table/lists"}