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 4dxy, 4dxz, 4dyz, 4dx 2