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Potassium impart purple colour but beryllium do not impart any colour to the flame.Why?​

Potassium impart purple colour but beryllium do not impart any colour to the flame.Why?​
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Potassium impart purple colour but beryllium do not impart any colour to the flame.Why?​

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User Aembke
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Answer:

The electrons in beryllium and magnesium are too strongly bound to get excited by flame. Hence, these elements do not impart any color.

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User Ferdinand Beyer
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