NAMEK1 H hydrogen : 1s11s112 He helium : 1s21s223 Li lithium : 1s2 2s11s22s124 Be beryllium : 1s2 2s21s22s225 B boron : 1s2 2s2 2p11s22s2 2p126 C carbon : 1s2 2s2 2p21s22s2 2p227 N nitrogen : 1s2 2s2 2p31s22s2 2p328 O oxygen : 1s2 2s2 2p41s22s2 2p429 F fluorine : 1s2 2s2 2p51s22s2 2p5210 Ne neon : 1s2 2s2 2p61s22s2 2p6211 Na sodium : [Ne] 3s11s22s2 2p63s1212 Mg magnesium : [Ne] 3s21s22s2 2p63s2213 Al aluminium : [Ne] 3s2 3p11s22s2 2p63s2 3p1214 Si silicon : [Ne] 3s2 3p21s22s2 2p63s2 3p2215 P phosphorus : [Ne] 3s2 3p31s22s2 2p63s2 3p3216 S sulfur : [Ne] 3s2 3p41s22s2 2p63s2 3p4217 Cl chlorine : [Ne] 3s2 3p51s22s2 2p63s2 3p5218 Ar argon : [Ne] 3s2 3p61s22s2 2p63s2 3p6219 K potassium : [Ar] 4s11s22s2 2p63s2 3p6220 Ca calcium : [Ar] 4s21s22s2 2p63s2 3p6221 Sc scandium : [Ar] 3d1 4s21s22s2 2p63