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Solution


Q.

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:               [2024]
1 (A)-(III), (B)-(I), (C)-(IV), (D)-(II)  
2 (A)-(IV), (B)-(II), (C)-(I), (D)-(III)  
3 (A)-(II), (B)-(IV), (C)-(III), (D)-(I)  
4 (A)-(I), (B)-(IV), (C)-(III), (D)-(II)  

Ans.

(1)                     

Alkali metal Emission wavelength (in nm)
(A)   Li (III)    670.8
(B)   Na (I)      589.2
(C)   Rb (IV)   780.0
(D)   Cs (II)    455.5