Why does alkali metals impart characteristic colour to the flame?

Why do alkali metals impart characteristic colour to the flame of bunsen burner?

Does Mg impart characteristic colour to the flame?

Give reasons for the following: a. Alkli metals do not occur free in nature. b. Alkali metal salts impart characteristic colour to the flame. c. Caesium is used in photoelectric cell. d. Alkali metals are good reducing agents in aqueous medium.

Give reasons for the following: a. Alkli metals do not occur free in nature. b. Alkali metal salts impart characteristic colour to the flame. c. Caesium is used in photoelectric cell. d. Alkali metals are good reducing agents in aqueous medium.

What is flame test and why do alkali metals show characteristic colours in the flame?

Assign reasons for the following (i) alkali metals impart characteristic colour to flame (ii) Alkali metals are strong reducing agents. (iii) An aqueous solution of Na_(2)CO_(3) is basic in nature.

Which alkali metal imparts pale violet colour to the flame?

Which of the following does/do not impart characteristic colour to the flame?