Part B. Classify the following elements as halogens, alkali metals, alkaline earth metals, or noble gases.
F, Br, Rb, Fr, Sr, Xe
Drag the appropriate elements to their respective bins.
The periodic table is the most important organizing principle in chemistry. There is a regular progression in the periodic table that reflects a similar regularity in the structures and properties of the different elements. If you know the properties of any one element in a group, you can make a good guess at the properties of every other element in the same group and even the elements in neighboring groups. Familiarizing yourself with the structure and arrangement of the periodic table early on will help you later on in chemistry.
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