The physical properties of halogens change as you move down the group! π
Fluorine, the lightest, is a gas, while bromine is a liquid at room
temperature. Iodine is solid and shimmery! β
οΈ The boiling and melting points increase from fluorine to iodine. Fluorine is the most reactive halogen, while iodine is the least reactive. The colors of these elements are also fascinating! They go from yellow-green to deep purple. When you see a halogen, youβll know if itβs a gas, liquid, or solid just by looking at it!