JEE Main 2024 Chemistry question

ChemistryThe s-Block ElementsJEE Main 2024

Not in JEE Main or NEET syllabus

Match List-I with List-II. List-I (Alkali Metal): (A) Li (B) Na (C) Rb (D) Cs List-II (Emission Wavelength in nm): (I) 589.2 (II) 455.5 (III) 670.8 (IV) 780.0

Answer: (B)

Solution

Flame emission: Li 670.8 nm (crimson), Na 589.2 nm (golden yellow), Rb 780.0 nm (red-violet), Cs 455.5 nm (blue).

Question ID VK-012095