The electron emitted in beta radiation originates from
Inner orbits of atoms
Free electrons existing in nuclei
Decay of a neutron in a nucleus
Photon escaping from the nucleus
The $\beta$-particles of a radioactive metal originate from
Which one of the following is a possible nuclear reaction
A nucleus $_Z{X^A}$ emits $3 \alpha$ - particles and $5 \beta$ particle. The ratio of total neutrons and protons in the final nucleus is
What is $\alpha -$ , $\beta -$ and $\gamma -$decay ? Write its general formula.
In the nuclear decay given below
$_z{X^A}{ \to _{z + 1}}{Y^A}{ \to _{z - 1}}{K^{A - 4}}{ \to _{z - 1}}{K^{A - 4}}$
the particles emitted in the sequence are