atom 4d4d atomic orbitals. There are five 4d orbitals. These are labelled 4d xy, 4d xz, 4d yz, 4d x 2-y 2 and 4d z 2. The 4d z 2 name is an abbreviation for 3d (3z 2 –rCinema 4D Tutorials: Modeling Tools. In this 4th episode of intro to Cinema 4D Tutorials, you’ll learn how the modeling tools work. The tools that will be covered are the array, atom array,