atom 4dATOMIC NUMBERSYMBOLNAMEELECTRON CONFURATION39YYttrium1s 2 2s 2 p 6 3s 2 p 6 d 10 4s 2 p 6 d 1 ...40ZrZirconium1s 2 2s 2 p 6 3s 2 p 6 d 10 4s 2 p 6 d 2 ...41NbNiobium1s 2 2s 2 p 6 3s 2 p 6 d 10 4s 2 p 6 d 4 ...42MoMolybdenum1s 2 2s 2 p 6 3s 2 p 6 d 10 4s 2 p 6 d 5 ...Lihat semua 11 baris di4d 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 –r