Answer
$^{1}_{1}p$ , $^{1}_{0}n$ , $^{0}_{-1}e$
Work Step by Step
A proton has an atomic number of 1 and a mass number of 1. A neutron has a mass number of 1 but an atomic number of 0 because atomic number is the number of protons. An electron has negligible mass so its mass number is 0 and it's atomic number is -1 because when it is emitted, a proton changes to a neutron therefore decreasing the atomic number by 1.
