Among the elements , how many elements impart a shade of red (including crimson red, brick red, red-violet) to the flame?

Question

Among the elements $Li, Na, K, Rb, Cs, Ca, Sr, Ba$, how many elements impart a shade of red (including crimson red, brick red, red-violet) to the flame?

Prashant Kotian · Accepted Answer

Correct answer: 4. The flame colors are: Li (Crimson red), Na (Yellow), K (Violet), Rb (Red violet), Cs (Blue), Ca (Brick red), Sr (Crimson red), Ba (Apple green). The elements giving a red shade are Li, Rb, Ca, and Sr. Total = 4.

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