Energy of One Electron in a H atom E(eV) 0- (vacuum energy) -13.6 16 4s 4p 4d 4f -13.6 9 3d -13.6 4 2p where k=13.6 eV; E = 水 n2 n is the principal -13.6 quantum number 1 IV-5* E(eV) 0 -13.6 16 -13.6 9 -13.6 4 -13.6 1 (vacuum energy) 1s 2s 2p 3s 3p 4s 4p 4d 4f 3d Energy of One Electron in a H atom * E = -k n2 where k=13.6 eV; n is the principal quantum number IV-5