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 –rFastest Real Time live 4D Results of Malaysia Magnum 4D, TOTO 4D, DaMaCai, Sabah 4D88, CashSweep, Sandakan 4D & Singapore Pools 4D