Structure of Atom

Match List I with List II Choose the correct answer from the options given below:

1. A-II, B-IV, C-III, D-I
2. A-I, B-III, C-II, D-IV
3. A-II, B-III, C-I, D-IV
4. A-I, B-II, C-III, D-IV

Answer

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

Solution

Series and the lower level n1 of the transition:

A. Lyman (n1 = 1): UV ⇒ A-II

B. Balmer (n1 = 2): visible ⇒ B-IV

C. Paschen (n1 = 3): infrared ⇒ C-III / I

D. Pfund (n1 = 5): infrared ⇒ D-I / III

∵ only option (1) has A-II and B-IV with C, D both in infrared ⇒ A-II, B-IV, C-III, D-I

Answer: (1)