Question
Chemistry Question on d -and f -Block Elements
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
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Explanation
Solution
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