Atomic Weights and Isotopic Compositions for All Elements

Molecule of the Month Welcome to the Molecule of the Month page! This is one of the longest running chemistry webpages on the internet. Each month since January 1996 a new molecule has been added to the list on this page, which makes this one of the longest running Chemical websites on the internet! The links will take you to a page at one of the Web sites at a University Chemistry Department or commercial site in the UK, the US, or anywhere in the world, where useful (and hopefully entertaining!) Each month's new molecule will be announced on Twitter [@MoleculeM] and via an RSS newsfeed [ We are always happy to receive Molecule of the Month articles from anyone who wishes to submit one. What do I need to see the pages properly? See here for all the details of software and helper files you require. See here for a list of the awards and citations received by this page and a disclaimer. Above is a drop-down alphabetical list of all the molecules.

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