In the given nuclear reaction, how many $\beta$ and $\alpha$ particles are emitted $_{92}{X^{235}} \to {\;_{82}}{Y^{207}}$
$3 \alpha$ particles and $2 \beta$ particle
$4 \alpha$ particles and $3 \beta$ particle
$6 \alpha$ particles and $4 \beta$ particle
$7 \alpha$ particles and $4 \beta$ particle
In a material medium, when a positron meets an electron both the particles annihilate leading to the emission of two gamma ray photons. This process forms the basis of an important diagnostic procedure called
What happens to the mass number and atomic number of an element when it emits $\gamma$-radiation?
Atomic mass number of an element thorium is $232$ and its atomic number is $90$. The end product of this radioactive element is an isotope of lead (atomic mass $208$ and atomic number $82$). The number of alpha and beta particles emitted is
Alpha particles are
In an $\alpha -$ decay, the kinetic energy of $\alpha -$ particle is $48\, MeV$ and $Q$ value of the reaction is $50\, MeV$. The mass number of the mother nucleus is [assume that daughter nucleus is inground state]