For artificial transmutation of nuclei,the most effective one is

The $_6C^{14}$ in the upper atmosphere is generated by which of the following nuclear reactions?

The isotope $_{92}U^{235}$ decays in a number of steps to an isotope of lead $_{82}Pb^{207}$. The groups of particles emitted in this process will be

Which one of the following nuclear transformations is of the $(n, p)$ type?

In the sequence of the following nuclear reactions $_{92}X^{238}$ $\xrightarrow{-\alpha} Y$ $\xrightarrow{-\beta} Z$ $\xrightarrow{-\beta} L$ $\xrightarrow{-n\alpha} _{84}M^{218}$. The value of $n$ will be:

Which one of the following notations shows the product incorrectly?