Test your knowledge of the Halogen family of chemical elements.
The most reactive of the non-metals
Forms four oxyanions, one of which is found in bleach
This element is in an ionic compound that helps prevent tooth decay.
Aa brown liquid at room temperature
A toxic yellow-green gas that can be produced by the reaction of bleach with ammonia
a silver-gray solid that vaporizes to a purple gas
This element is added to salt because people need it for proper thyroid function.
