Question

Match List-I with List-II.

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

Choose the correct answer from the options given below:

• A. (A)-(I), (B)-(IV), (C)-(III), (D)-(II)
• B. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
• C. (A)-(IV), (B)-(II), (C)-(I), (D)-(III)
• D. (A)-(II), (B)-(IV), (C)-(III), (D)-(I)

Answer 1

The Correct Option is B

This is a fact-based question regarding the emission wavelengths of alkali metals. The correct matches based on known data are:

(A) Li – (III) 670.8 nm
(B) Na – (I) 589.2 nm
(C) Rb – (IV) 780.0 nm
(D) Cs – (II) 455.5 nm