15O 8 → 1e 0 + 14O 8
Answer: B Topic: Section 2.8 Radioactivity 69) Which reaction below represents 232Th 90 decay by alpha emission? A) 232Th 90 → 4He 2 + 228Ra 88
B) 232Th 90 → 2He 4 + 230Ra 86
C) 232Th 90 → p+ 231Ac 89
D) 232Th 90 → n+ 231Th 90
Answer:A
15O 8 → 1e 0 + 14O 8
Answer: B Topic: Section 2.8 Radioactivity 69) Which reaction below represents 232Th 90 decay by alpha emission? A) 232Th 90 → 4He 2 + 228Ra 88 B) 232Th 90 → 2He 4 + 230Ra 86 C) 232Th 90 → p+ 231Ac 89 D) 232Th 90 → n+ 231Th 90