The Group 7 Elements-C4

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  • The Group 7 Elements
    • At room temperature, chlorine is a green gas, bromine is an orange liquid and iodine is a grey solid
    • The group 7 elements have similar properties because they have 7 electrons on the outer shell
    • When halogens react with alkali metals, a metal halide is made
      • Potassium+ iodine ---> potassium iodide
    • The reactivity of halogens increases further up the group
    • If electrons are gained, the process is called reduction
      • Br2 + 2e-      --->2Br-


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