Write the balanced nuclear equation for the formation of 228 ac 89 through β− decay.

The balanced nuclear equation for the formation of ₈₉²²⁸Ac through a beta decay is given by;

₈₉²²⁸Ac → ₉₀²²⁸Th + ₋₁⁰e + energy

Further ExplanationRadioactivity Radioactivity refers to the process by which unstable radioactive isotope undergoes spontaneous decay by releasing energy and emitting particles such as alpha, beta or gamma particles.There are three types of decay; alpha decay, beta decay and gamma decay.Beta decay This is a type of radioactive decay in which an unstable nuclide undergoes decay to emit energy and beta particles.During beta decay, the atomic mass of the decaying atom increases by 11 while the mass number remains the same.Beta particle is equivalent to an electron,₋₁⁰e.Alpha decayIt is a type of radioactive decay in which emission of energy is coupled by the release of alpha particles.When an unstable isotope undergoes alpha decay, its atomic mass decreases by 2 while its mass number decreases by 4.An alpha particle is equivalent to helium nucleus, ₂⁴He.Gamma decayIt is a type of decay that only involve release of energy from an unstable isotope. It occurs normally after a beta decay or alpha decay.When gamma decay occurs, the atomic number and the mass number of the decaying isotope remains the same.

Keywords: Decay, beta decay, alpha decay, gamma decay

Learn more about:Radioactive decay:Alpha decay: Beta decay: Gamma decay:

Level: High school \

Subject: Physics

Topic: Radioactivity

Sub-topic: Beta decay.