Would someone be able to help confirm this matching problem? I really think I got the majority of it correct (please ignore my extra notes, just check the part 5).

Match each of the following species, cyanate ion, sulfur dioxide, perchlorate ion, phosphoryl trichloride (OPCl3), and triiodide ion, with the symmetry element that describes it. (a) Has 3C2 rotations axes. (d) Has Cov symmetry. (b) Has a center of symmetry. dh (e) Has only one C3 axis. (c) Has a C2v symmetry. Cyanne ien: (ncN](d)