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Beryllium and magnesium do not impart co...

Beryllium and magnesium do not impart colour to the flame. Why?

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This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement - I : Beryllium does not impart any characteristic colour to the Bunsen flame. Statement - II: Due to its very high ionization energy, beryllium requires a large amount of energy for excitation of the electrons.