When a `beta`-particle is emitted from a nucleus, the neutron-proton ratio

When a beta^(-) particle is emitted from a nucleus, the neutrons-proton ratio:

When a beta^(-) particle is emitted from a nucleus, the neutrons-proton ratio:

When a beta^(-) particle is emitted from a nucleus, the neutrons-proton ratio:

When an alpha particle is emitted from a nucleus, its

When an alpha - particle is emitted from a uranium nucleus (atomic no. 92, mass number 238), a new nucleus is formed. From this nucleus a beta -particle is also emitted. Wha will be the atomic number and mass number of the final nucleus ?

A beta- particle is emitted by a radioactive nucleus at the time of convertsion of a:

How are beta -rays emitted from a nucleus, when it does not contain electrons?