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Which of the following statements is correct concerning the below reactions? 

(i) 

(ii) 

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  1. Both reactions (i) and (ii) are nuclear fusion reactions and during the reaction, they emit p particles in succession to achieve stable end products. 
  2. The reaction (ii) is a nuclear fission reaction but (i) is not and during the reaction, ∼ 50 MeV energy is released. 
  3. The reaction (i) is a nuclear fission reaction but (ii) is not and during the reaction, ∼ 216 MeV energy is released. 
  4. Both reactions (i) and (ii) are nuclear fission reactions and during the reaction, ∼ 216 MeV energy is released. 

Answer (Detailed Solution Below)

Option 4 : Both reactions (i) and (ii) are nuclear fission reactions and during the reaction, ∼ 216 MeV energy is released. 
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Detailed Solution

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Explanation:

Nuclear fission is a type of reaction in which the nucleus of an atom splits into two or more smaller nuclei.

In the nucleus of each atom of Uranium-235(U-235) are 92 protons and 143 neutrons. The arrangement of particles within U-235 is somewhat unstable and the nucleus can disintegrate if it is excited by an outside source. When a U-235 absorbs an extra neutron, it quickly breaks into two parts and releases three neutrons and energy is released. This is nuclear fission chain reaction. Both reactions undergoes Nuclear Fission. 

Mass of reactants-

Mass of , Mass of neutron

Total mass of Reactants

Mass of products-

Mass of 

Mass of 

Mass of neutron

Total Mass of Products

Then Difference in Mass is Mass Defect 

Energy released

(i) and (ii) undergoes nuclear fission reactions and during the reaction ∼ 216 MeV energy is released. 

Hence, the correct answer is Option-4-Both reactions (i) and (ii) are nuclear fission reactions and during the reaction, ∼ 216 MeV energy is released. 

 

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