Thank you for reporting, we will resolve it shortly
Q.
Which of the following cannot be emitted by radioactive substance during their decay?
AIEEEAIEEE 2003Nuclei
Solution:
The nuclei of the radioactive substances emit various particles as shown below.
Alpha decay $_{z}^{A} X \rightarrow{ }_{z-2}^{A-4} Y+{ }_{2}^{4} H e$
Beta decay $\left( B ^{-}\right)_{ z }^{ A } X \rightarrow_{ z +1}^{ A } Y + e ^{ e -}+\overline{ v }$
Beta decay $\left( B ^{+}\right)_{ A }^{ Z } X \rightarrow_{ z -1}^{ A } Y + e ^{+}+ v$
Electron capture ${ }_{ z }^{ A } X + e ^{-} \rightarrow{ }_{ z -1}^{ A } Y + v$
Gamma decay ${ }_{z}^{A} X \rightarrow{ }_{Z}^{A}+v$
As we see above in radioactive decay protons & neutrons are not emitted.