Which type of radioactive decay results in the release of a positron?

Which type of radioactive decay results in the release of a form of energy equivalent to a Helium nucelus?

Which type of radioactive decay results in the release of an electron?

This variable represents the parent atom

This variable represents the atomic mass

This variable represents the daughter atom

This variable represents the atomic number

Radioactive decay results in the emission of _______ and _______

^A_ZX --> ^A-4_Z-2Y + ⁴₂He

^A_ZX --> ^A_Z-1Y + ⁰₊₁e

^A_ZX^* --> ^A_ZX + ⁰₀ $$\gamma$$  

Which type of radioactive decay results in a daughter atom on the products side whose atomic number has decreased by one?