When an atom undergoes `beta^(bar)` decay

When a nucleus in an atom undergoes a radioactive decay, the electronic energy levels of the atom.

When a nucleus in an atom undergoes a radioactive decay, the electronic energy levels of the atom.

When a nucleus in an atom undergoes a radioactive decay, the electronic energy levels of the atom.

When a nucleus in an atom undergoes a radioactive decay, the electronic energy levels of the atom

The nuclide X undergoes alpha -decay and another nuclides Y undergoes beta^(ɵ) -decay, which of the following statement "is"//"are" correct?