The DAT general chemistry section expects you to be fluent in chemical compounds. For example, do you know the formula for chromate? Below is a selected list of common ions you should know for the DAT (click for full image).
* Also, a common mistake I see is people thinking helium is a diatomic molecule (He2). The formula for helium gas is just He. Helium is a noble gas and already has a full shell, so it is very unreactive.
Click the button below to download the Anki flash card deck of the common ions.
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