How colour of halogen intensity increases down the group
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The colour becomes darker and darker on moving down the group as we move down the group the atomic radii increase. Due to this the energy level becomes closer. More shells get added so more energy levels are present. Due to this the high energy wavelengths are absorbed .
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The colour becomes darker and darker on moving down the group as we move down the group the atomic radii increase. Due to this the energy level becomes closer. More shells get added so more energy levels are present. Due to this the high energy wavelengths are absorbed .
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