Nuclear Physics And Radioactivity Question 5
Question: Assertion : Radioactive nuclei emit $ {{\beta }^{-1}} $ particles. Reason : Electrons exist inside the nucleus. [AIIMS 2003]
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: C
Solution:
Nuclear stability depends upon the ratio of neutron to proton. If the $ n/p $ ratio is more than the critical value, then a neutron gets converted into a proton forming a $ {{\beta }^{-}} $ particle in the process. $ n\to p+{{e}^{-}} $ The $ {{\beta }^{-}} $ particle $ ({{e}^{-}}) $ is emitted from the nucleus in some radioactive transformation. So electrons do not exist in the nucleus but they result in some nuclear transformation.
BETA
