gas 4d

Electron Configuration: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 1. 4d macau Noble Gas Configuration: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 1 : [Kr] 5s 2 4d 1 Number of valence electrons: 2 valence electrons that come from the highest shell (n=5) [Kr] 5s 2 4d 1