Electron Pushing / Curved Arrow

Question types ::: qtype_easyomech
Maintained by Carl LeBlond
Part of set EasyOChem.
Curved Arrow / Electron Pushing question can be used to test and strengthen students knowledge of reaction mechanism, resonance and curved arrow notation. This plugin requires Marvin Applets from Chemaxon.
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Exception - Unsupported operand types: string + int

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