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Why all halogens are coloured?

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Why all halogens are coloured?

    • Posted by Shubham Thakur 7 years, 7 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Amisha Panchal 7 years, 7 months ago

    Okay

    1Thank You

    Amisha Panchal 7 years, 7 months ago

    Halogens have an impaired electron that is present in the outermost shell (valence shell) of the atom . When photons (light particles ) of suitable energy hit the atom , the electron get excited and moves of higher energy states in the atom .

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