When ${}_{92}{U}^{238}$ decays it emits an $\alpha$ - particle. The new nuclide in turn emits a $\beta$ - particle to give another nuclide X. The mass number and atomic number of X are respectively :

Q. A nuclide (X) of mass number 233 emits six $\alpha$- particles and same number of $\beta$ - particles. The mass number of the daughter nuclide is

Q. The atomic number ($A$) and mass number ($M$) of the nuclide formed when three alpha $\alpha$ and two $\beta$ particles are emitted from ${238}_{92}^{238}U$

Q. In the radioactive decay process of uranium the initial nuclide is ${}_{92}{U}^{238}$ and the final nuclide is ${}_{82}{Pb}^{206}$. When uranium nucleus decays to lead, then the number of $\alpha$ -particles and $\beta$ -particles emitted will respectively be :

Q. The nuclide $X$ undergoes $\alpha$-decay and another nuclide $Y$, ${\beta }^{-}$-decay. Which of the following statements are correct?
1. The ${\beta }^{}$-particles emitted by $Y$ may have widely different speeds.
2. The $\alpha$-particles emitted by $X$ may have widely different speeds.
3. The $\alpha$-particles emitted by $X$ will have almost same speed.
4. The $\beta$-particles emitted by $Y$ will have the same speed.

Q. The uranium nucleus ${}_{92}{\text{U}}^{238}$ emits an $\alpha$ -particle and resulting nucleus emits one $\beta$ -particle. The atomic number and mass number of the final nucleus will be respectively