Common Ions You Need to Know

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.

Ari Rezaei

My name is Ari Rezaei and I’m a dental graduate from Columbia. My team and I built to provide challenging prep material to get you ready to conquer your classes and exams.