There are a maximum of 32 electrons in the sixth orbit shell. This shell has four subshells, labeled s, p, d, and f, each of which can hold a certain number of electrons:

- The s subshell can hold a maximum of 2 electrons.

- Each of the three p subshells can hold a maximum of 6 electrons, for a total of 18 electrons in the three p subshells.

- The d subshell can hold a maximum of 10 electrons.

- The f subshell can hold a maximum of 14 electrons.

Therefore, the sixth orbit shell can hold a maximum of 2 + 18 + 10 + 14 = 32 electrons.