Which two factors affect the energy of an electron in an orbit? How?

(N/A) The energy of an electron in an orbit is determined by the atomic number $(Z)$ and the principal quantum number $(n)$.
$1$. As the atomic number $(Z)$ increases,the energy becomes more negative (lower),indicating stronger attraction between the nucleus and the electron.
$2$. As the principal quantum number $(n)$ increases,the energy becomes less negative (higher),indicating the electron is further from the nucleus.