Nuclear Physics And Radioactivity Question 337
Question: An atomic nucleus $ _{90}Th^{232} $ emits several a and b radiations and finally reduces to $ _{82}Pb^{208} $ . It must have emitted [MP PET 2003]
Options:
A) 4a and 2b
B) 6a and 4b
C) 8a and 24b
D) 4a and 16b
Show Answer
Answer:
Correct Answer: B
Solution:
$ {n_{\alpha }}=\frac{A-A’}{4}=\frac{232-208}{4}=6 $ $ {n_{\beta }}=2{n_{\alpha }}-Z+Z’=2\times 6-90+82=4 $
BETA
