Yes, AlCl3 (aluminum chloride) does have a C3 axis. A C3 axis refers to a threefold rotational axis of symmetry, meaning that if you were to rotate the molecule by 120 degrees around this axis, it would look the same. In AlCl3, the aluminum (Al) atom is at the center, and three chlorine (Cl) atoms are arranged symmetrically around it, giving the molecule a C3 axis.
