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Match List I and List II. List I

1. Americium 1. Lanthanide
2. Lanthanum 2. Transition metal
3. Promethium 3. Actinide
4. Technician 4. Synthetic element 5. Radioactive element B. \( A-3,5 ; B-4 ; C-5 ; D-2 \) c. \( A-5 ; B-1,3 ; C-2,3 ; D-4 \) D. A - 2,5; B - 2; C - 1,5; D - -

Correct answer: Promethium 3. Actinide

Solution

Americium is an actinide and is radioactive/synthetic. Lanthanum is a lanthanide, while promethium is a lanthanide that is also radioactive and essentially synthetic in occurrence. The remaining item is not a standard element name, so the intended matching relies on these family properties.

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