Physical Properties Past Year (2019 onward - NTA Papers) MCQs The s-Block Elements (OLD NCERT) Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Alkali metals, though white, impart characteristic color to the flame because of

1.	excitation and coming back of valence electrons to the original level.
2.	oxidation of metal in the presence of flame.
3.	excitation of valence electrons.
4.	gain of electrons.

Subtopic: Physical Properties |

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