Section B Question 1 (5 marks) A mdioactive sample initially contains 100g of nuclide X-100. Nuclide X undergoes beta- mins decay into nuclide Y, which is stable. Initially, there are 1.7x1019 decays per second. What is the half-life of nuclide X? Question 3 (4 marks) 0-16 absorbs a neutron, and a proton is emitted. Name the type of reaction, and write the reaction equation. Question 4 (4 marks) B-10 absorbs a neutron, and a gamma is emitted. Name the type of reaction, and write the reaction equation Question 5 (2 marks) Name the type of reaction Question 6 (3 marks) What KE must a neutron have to make fission probable in U-238? Question 7 (4 marks) Explain the difference between fissile and fissionable materials