Match List-I with List-II and select the answer using the codes given below the Lists:
List-I (Symbol of Element)
A. Sm
B. Cs
C. Os
D. Np
List-II (Group of Element)
1. Transition Elements
2. Alkali Metals
3. Actinoid Elements
4. Lanthanoid Elements
A.A-4, B-2, C-1, D-3✓ Correct
B.A-4, B-1, C-2, D-3
C.A-3, B-1, C-2, D-4
D.A-3, B-2, C-1, D-4
Explanation
Samarium (Sm) is a lanthanoid element, so A matches with 4. Caesium (Cs) is an alkali metal (Group 1), so B matches with 2. Osmium (Os) is a transition element belonging to Group 8, so C matches with 1. Neptunium (Np) is an actinoid element with atomic number 93, so D matches with 3. Therefore the correct pairing is A-4, B-2, C-1, D-3.
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