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In radioactive transformation \mathrm{{ }_{92} \mathrm{U}^{238}} exits 2 \alpha and 2 \beta particles and gets converted into Thorium (Tb). The atomic number and mass number will be -

Option: 1

 86 and 232
 


Option: 2

 30 and 234
 


Option: 3

 90 and 230
 


Option: 4

 90 and 238


Answers (1)

best_answer

\begin{gathered} \alpha \longrightarrow A-4 \quad z+2 \\ \beta \longrightarrow A \quad z+1 \\ 92 U^{238} \stackrel{2 \alpha}{\longrightarrow}{ }_{88} \times^{230} \stackrel{2 \beta}{\longrightarrow}{ }_{90} \gamma^{230} \end{gathered}

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Ritika Kankaria

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