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Physical State, , CONFIGURATION, , Und ow, eo od od, Gas | liquid | — Solid cotton, | i, —B REACTIVITY, " 4) ACIDITY, , Reactivity decreases down the group (=), , as itis harder to add electrons. cially cecrenies down the, , cy group, , Gis the most reacive u (Dis the strongest acid which, , can dissolve glass also., , INTER, , HALOGEN CHLORINE IN, Halogens combine with each other to forms series eOEEE, of compounds Ike Germany used chlorine, AX AX; AXs Axy in world war- | against, Large molecules can accomodate France., more halogens like in IF7 Chlorine gas destroys, Small fluorine can't accomodate respiratory organs,, , many halogens like in FC!, , ELECTRONEGATIVITY, 7. VARIABLE OXIDATION :, ‘STATES, , , , , , ‘Atomic size increases, Halogens exhibits variable oxidation states. down the group, therefore, starting from - to 7 electronegativity, aa show positive oxidation state. RDERIS BOT 2 SOUS, Fluorine is used ” lodine is used in, in Tooth Paste [Ea Disinfectants, USES —, Chlorine is used as (ig Bromine is used for, , a Bleaching Agent developing Photographic films