₉₂ U ²³⁵ undergoes successive disintegrations with the end product of ₈₂ ~Pb ²⁰³ . The number of and particles emitted are

Step-by-step solution

When an - particle emits from a radioactive nuclei, then its mass number is decreased by 4 unit and atomic number is decreased by 2 unit. When a -particle emits from a radioactive nuclei, then its mass number is unaffected, whereas atomic number is increased by one unit. Here, initial nuclei = ₉₂ U ²³⁵ Final nuclei = ₈₂ P ²⁰¹³ Change in mass number =235-203=32 Number of -particle emitted = 32 4 =8 Number of emitted -particles =8 2-(92-82)=16-10=6