Practice problem
Ionic Bonding (Biology) — Definition & Role

Image Sources: Rock collection by Maatpublishing CC BY 2.0, via Wikimedia Commons. Rock salt by あおもりくま CC BY 2.0, via Wikimedia Commons. Quartz by Didier Descouens CC BY 2.0, via Wikimedia Commons. Ruby by Rob Lavinsky CC BY 2.0, via Wikimedia Commons. Fluorite by Runningblader CC BY 2.0, via Wikimedia Commons.
As you examine your rock collection, you realize that most crystals seem to be ionic. Which of the following crystals does not exhibit ionic bonding?