JEE Main · 2024 · 06 Apr 2024 · Shift 2 · Chapter_pending

Match List-I with List-II.

Answer: A → III, B → I, C → IV, D → II

Solution

Characteristic flame/emission wavelengths: Li — 670.8 nm (red), Na — 589.2 nm (the D-line, yellow), Rb — 780.0 nm, Cs — 455.5 nm (with a companion line further in the infrared). So (A) Li–670.8 nm, (B) Na–589.2 nm, (C) Rb–780.0 nm, (D) Cs–455.5 nm.

JEE Main · 2024 · 06 Apr 2024 · Shift 2 · Match the columns

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