Entry Test MCQ :: s-BLOCK ELEMENTS

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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: Option C