Nuclear reaction(s) accompanied with emission of neutron(s) is/are — Nuclear Chemistry and Radioactivity Chemistry Question

💡 Solution & Explanation

**Step 1: Check each reaction for neutron emission.** **(A)** $\ce{^{27}_{13}Al + ^4_2He -> ^{30}_{15}P + ?}$ - Charge: $13 + 2 = 15$ ✓ (P) - Mass: $27 + 4 = 31 = 30 + 1$ → **emits 1 neutron** $\ce{^1_0n}$ ✓ **(B)** $\ce{^{12}_6C + ^1_1H -> ^{13}_7N + ?}$ - Charge: $6 + 1 = 7$ ✓ (N) - Mass: $12 + 1 = 13$ → no mass left for neutron; emits $\gamma$ only ✗ **(C)** $\ce{^{30}_{15}P -> ^{30}_{14}Si + e^+}$ - This is beta-plus decay; no neutron emitted ✗ **(D)** $\ce{^{241}_{95}Am + ^4_2He -> ^{244}_{97}Bk + ?}$ - Charge: $95 + 2 = 97$ ✓ (Bk) - Mass: $241 + 4 = 245 = 244 + 1$ → **emits 1 neutron** ✓ **Step 2: Identify correct options.** Reactions A and D both produce a neutron as the byproduct. **Answer: A and D**