Question

An element ₉₂U²³⁸ losses one alpha particle, and then one β-particle and then again one β- particle to get the final nucleus _bQ^a. 

(i) Write down the values of a and b. 

(ii) State the relationship between the nuclei P and Q. 

Answer 1

(ii) On examining P and Q we find that their mass number are different, i.e., 238 and 234, but both have the same atomic number, i.e., 92, hence P and Q isotopes of P.