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1. \(_{92}U^{235}\) experiences one \(α\) - decay and one \(β\) - decay. Find number of neutrons in the final daughter nucleus that is formed.
 
Numberofneutrons=MassnumberAtomicnumber=ii=i
 
2. Calculate the amount of energy released when a radioactive substance undergoes fusion and results in a mass defect of \(2\ kg\).
 
By substituting the given values in the Einstein's formula, we get
 
E=iii=i×i×10ii=i×10iJ