Question

During a negative $\beta$ -decay:

• A. an atomic electron is ejected
• B. an electron which is already present within the nucleus is ejected
• C. a neutron in the nucleus decays emitting an electron
• D. a part of the binding energy of the nucleus is converted into an electron

Answer 1

The correct option is C a neutron in the nucleus decays emitting an electron

During a negative -decay a neutron in the nucleus decays emitting an electron.
The reaction for the nuclear change is ${}_0{n}^1{\to }_1{H}^1{+}_{-1}{e}^0$.