The $\alpha$ -particle is the nucleus of --------- atom .

Q. The $\alpha$ -particle is the nucleus of --------- atom .

Q. When an a $\alpha$ particle is emitted from the nucleus of an atom, then

Q. A nucleus ${}_Z^{A}X$ emits an $\alpha -particle$. the resultant nucleus emits a ${\beta }^{+}$ particle. the respective atomic and mass numbers of the final nucleus will be

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

Q. The closest distance an $\alpha$ particle emitted can reach to the nucleus of an an atom is called