What is the first quantum number of the 3p1 electron in aluminum 1s2s22p63s23p1?

The first quantum number, also known as the principal quantum number (n), represents the energy level of an electron in an atom. For the 3p¹ electron in aluminum, which has the electron configuration 1s² 2s² 2p⁶ 3s² 3p¹, the first quantum number is 3, indicating that this electron is in the third energy level.