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Title: Make the chemical formula example truly syntactically incorrect by wzel · Pull Request #28 · AllenDowney/ThinkPython2 · GitHub

Open Graph Title: Make the chemical formula example truly syntactically incorrect by wzel · Pull Request #28 · AllenDowney/ThinkPython2

X Title: Make the chemical formula example truly syntactically incorrect by wzel · Pull Request #28 · AllenDowney/ThinkPython2

Description: Subscript before an element can be used to indicate its atomic number, which makes it syntactically legal.

Open Graph Description: Subscript before an element can be used to indicate its atomic number, which makes it syntactically legal.

X Description: Subscript before an element can be used to indicate its atomic number, which makes it syntactically legal.

Opengraph URL: https://github.com/AllenDowney/ThinkPython2/pull/28

X: @github

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