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Why alkali metal impart characteristic colours when introduced to flame​
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Why alkali metal impart characteristic colours when introduced to flame​

User Spencergibb
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Alkali metals impart characteristic colours to the flame due to low ionisation enthalpy, when an alkali metal or its salt is heated in a flame, the valence electrons are excited to higher energy level.
User Bushdiver
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Potassium impart purple colour but beryllium do not impart any colour to the flame.Why?​
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