During Negative Beta Decay?

In beta minus decay, a neutron decays into a proton, an electron, and an antineutrino: n Æ p + e - +. ... However within a nucleus, the beta decay process can change a proton to a neutron. An isolated neutron is unstable and will decay with a half-life of 10.5 minutes.

What happens in negative beta decay?

In electron emission, also called negative beta decay (symbolized β⁻-decay), an unstable nucleus emits an energetic electron (of relatively small mass) and an antineutrino (with little or possibly no rest mass), and a neutron in the nucleus becomes a proton that remains in the product nucleus. ...

How does beta minus decay affect the atomic number?

As a result of beta decays, the mass number of the atoms remains the same, but the atomic number changes: the atomic number increases in the negative beta decay and decreases in the positive beta decay, respectively.