Halogens = salt formers
Group 7 - halogensHalogens = salt formers
xx xx x x x F xx
xx xx xxx x x x x CL x x xx xx
All have 7 electrons in outer shell All want to gain 1 electron
+1e- =1e-Fluorine F ------> Fluoride F- Chlorine Cl ------> Chloride CL-
Reactivity of the halogens decreases down the group because;- -More inner shells (shielding)-Distance from nucleus to outer shell is greater-Less attraction to gain the electron.
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