If radium and chlorine combine to form radium chloride, the compound would be

Which of the following can be used for carrying out a nuclear fission reaction?

In the successive emission of $\alpha$- and $\beta$-particles,the number of $\alpha$- and $\beta$-particles that should be emitted for the conversion of ${}^{238}_{92}U$ to ${}^{206}_{82}Pb$ are:

What is the packing fraction of $_{26}^{56}Fe$ (Isotopic mass $= 55.92066$)?

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 fuel used in an atomic pile is