📅 NSB Middle School 2021🎓 MS🔄 Round 6#️⃣ Question 14❓ TOSS-UP✍️ Short Answer
An example of a fission reaction is the addition of a neutron to uranium-235, producing krypton-92, three neutrons, and an isotope of barium. What is the mass number of the barium isotope?
✔️Answer:141
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