Match list I with list II and elect the correct answer:
List I (Isotope)
List II (Characteristic)
A. 126Ca
1. unstable, α-emitter
B. 13363I
2. unstable, β-emitter
C. 12153I
3. unstable, positron emitter
D. 23290Th
4. stable
A
A-1, B-2, C-3, D-4
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B
A-1, B-3, C-2, D-4
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C
A-4, B-3, C-2, D-1
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D
A-4, B-2, C-3, D-1
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Solution
The correct option is D A-4, B-2, C-3, D-1 (A) The isotope 126Ca is stable (B) The isotope 13363I is unstable in nature. It is β-emitter. (C) The isotope 12153I is unstable in nature. It is positron emitter. (D) The isotope 23290Th is unstable in nature. It is α-emitter.