1s22s22p51 s^{2} 2 s^{2} 2 p^{5}1s22s22p5
1s22s22p63s11s^22s^22p^63s^11s22s22p63s1
1s22s22p41 s^{2} 2 s^{2} 2 p^{4}1s22s22p4
1s22s22p63s22p51s^22s^22p^63s^22p^51s22s22p63s22p5