In which of the following decay, the element does not change
$\beta$- decay
$\alpha$- decay
$\gamma$- decay
None of these
The radioactive nucleus $_7{N^{13}}$decays to $_6{C^{13}}$ through the emission of
In the nuclear reaction: $X(n,\,\alpha ){\,_3}L{i^7}$ the term $X$ will be
A radioactive nucleus undergoes $\alpha$- emission to form a stable element. What will be the recoil velocity of the daughter nucleus if $V$ is the velocity of $\alpha$-emission and $A$ is the atomic mass of radioactive nucleus
Which can pass through $20 \,cm$ thickness of the steel
In nuclear reaction $_2H{e^4}{ + _z}{X^A}{ \to _{z + 2}}{Y^{A + 3}} + A,\;A$ denotes