Question

A certain nucleus $X$ has a mass number 14 and atomic number 6. The nucleus $X$ changes to ${}_7^{14}Y$ after the loss of a particle. Name the particle emitted.

Answer 1

The particle emitted is an electron.

And the reaction is ${}_6{X}^{14}{\to }_7{Y}^{14}{+}_{-1}{e}^0+\overline{{\nu }_e}$.