Alkali and alkaline earth metals impart colours when heated over burner. It is due to

Question

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Excitation of electrons from low energy levels to higher energy levels

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Smaller electronegativity of alkali metals

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Smaller ionic radius of these metals

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De-excitation of electrons from higher energy levels to low energy level

1.	Alkali and alkaline earth metals impart colours when heated over burner. It is due to
A.	Smaller electronegativity of alkali metals
B.	Smaller ionic radius of these metals
C.	De-excitation of electrons from higher energy levels to low energy level
D.	Excitation of electrons from low energy levels to higher energy levels
Answer» D. Excitation of electrons from low energy levels to higher energy levels

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