The atomic mass of lead is $208$ and atomic number is $82$. The atomic mass of bismuth is $209$ and atomic number is $83$. The ratio of $n/p$ in the atom is

The nuclear binding energy for $Ar$ $(39.962384 \, amu)$ is ......... $MeV.$ (Given: mass of proton $= 1.007825 \, amu$,mass of neutron $= 1.008665 \, amu$)

Formation of a nucleus from its nucleons is accompanied by:

In a nuclear reactor,the chain reaction is controlled by introducing:

If the binding energy per nucleon of $_1H^2$ is $x$ and that of $_2He^4$ is $7x$,then the ratio of the energy liberated in the reaction $_1H^2 + _1H^2 \to _2He^4$ to the binding energy per nucleon of $_1H^2$ is:

Consider the following nuclear reactions:
$_{92}^{238}M \to _{y}^{x}N + 2_{2}^{4}He$
$_{y}^{x}N \to _{B}^{A}L + 2\beta^{+}$
The number of neutrons in the element $L$ is: