In nuclear reactors,the speed of the neutrons is slowed down by:

In the Thorium series,$_{90}Th^{232}$ loses a total of $6$ $\alpha$-particles and $4$ $\beta$-particles in ten stages. The final isotope produced in the series is

The measure of binding energy of a nucleus is the

The atomic mass of an element is $12.00710 \, amu$. If there are $6$ neutrons in the nucleus of the atom of the element,the binding energy per nucleon of the nucleus will be $....... \, MeV$.
($e^{-} = 0.00055 \, amu$,$p = 1.00814 \, amu$,$n = 1.00893 \, amu$)

$A$ nuclear reaction must be balanced in terms of

The nucleus of an atom is made up of $X$ protons and $Y$ neutrons. For the most stable and abundant nuclei,