WAEC SSCE - Chemistry - 2009 (Objective)

Question 1 Report

Consider the reaction represented by the equation: ²³⁸₉₂U + ¹₀ → ¹³⁹ ₅₆Ba + ⁹⁴ ₃₆Kr + 3¹ ₀n. The reaction represents a

nuclear fission

nuclear fusion

radioactive decay

spontaneous disintegration

Answer Details

The reaction shown in the equation ²³⁸₉₂U + ¹₀ → ¹³⁹ ₅₆Ba + ⁹⁴ ₃₆Kr + 3¹ ₀n represents nuclear fission. Nuclear fission is a process in which a heavy nucleus is split into two or more smaller nuclei and typically releases a large amount of energy in the form of heat and radiation. In this particular reaction, uranium-238 is bombarded with a neutron, which causes it to split into two smaller nuclei (barium-139 and krypton-94) and three neutrons. This process also releases a significant amount of energy in the form of radiation.

Read lesson note on Kinetic Theory Of Matter And Gas Laws (JAMB)






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