https://github.com/osofem/molecules

Get atoms from a molucular formula
https://github.com/osofem/molecules

atom chemistry compounds elements formula molecule

Last synced: 25 days ago
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Get atoms from a molucular formula

• Host: GitHub
• URL: https://github.com/osofem/molecules
• Owner: osofem
• License: mit
• Created: 2017-07-26T11:12:13.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2022-02-08T12:09:22.000Z (over 2 years ago)
• Last Synced: 2024-09-28T20:02:29.405Z (about 1 month ago)
• Topics: atom, chemistry, compounds, elements, formula, molecule
• Language: TypeScript
• Homepage:
• Size: 36.1 KB
• Stars: 2
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# molecules.js

Get the number of each atom from a molecular formula

### Installation

```javascript

npm i molecules.js

```

  

### Usage

```javascript

const Molecules = require('molecules.js');

const mc = new Molecules();

console.log(mc.getMolecules("H2O")); //This logs object {H:2, O: 1}

console.log(mc.getMolecules("H2SO4")); //This logs object {H:2, S: 1, O: 4}

console.log(mc.getMolecules("C6H12O6")); //This logs object {C: 6, H: 12, O: 6}

console.log(mc.getMolecules("C17H21NO4")); //This logs object {C: 17, H: 21, N: 1, O: 4}

console.log(mc.getMolecules("Mg(OH)2")); //This logs object {Mg: 1, O: 2, H: 2}

console.log(mc.getMolecules("K4[ON(SO3)2]2")); //This logs object {K: 4, O: 14, N: 2, S: 4}

console.log(mc.getMolecules("(C5H5)Fe(CO)2CH3")); //This logs object {C: 8, H: 8, Fe: 1, O: 2}

console.log(mc.getMolecules("{[Co(NH3)4(OH)2]3Co}(SO4)3")); //This logs object {Co: 4, N: 12, H: 42, O: 18, S: 3}

console.log(mc.getMolecules("2Na3PO4.12H2O")); //This logs object { Na: 6, P: 2, O: 20, H: 24 }

console.log(mc.getMolecules("2Na3PO4.12H2O.P9")); //This logs object { Na: 6, P: 11, O: 20, H: 24 });

```

### Rule

1. The atomic symbols should always start with a capital letter followed by a small letter if the symbol is double lettered. E.g. `H` - Hydrogen, `C` - Carbon, `O` - Oxygen, `Co` - Cobalt (not CO), `CO` - Carbon Monoxide.

2. The `()`, `[]` and or `{}` brackets can be used to group the elements but should be properly nested.