原子序数元素符号元素名称电子排布式1H氢1s12He氦1s23Li锂1s22s14Be铍1s22s25B硼1s22s22p16C碳1s22s22p27N氮1s22s22p38O氧1s22s22p49F氟1s22s22p510Ne氖1s22s22p611Na钠1s22s22p63s112Mg镁1s22s22p63s213Al铝1s22s22p63s23p114Si硅1s22s22p63s23p215p磷1s22s22p63s23p316S硫1s22s22p63s23p417Cl氯1s22s22p63s23p518Ar氩1s22s22p63s23p619K钾1s22s22p63s23p64s11—36号元素电子排布式原子序数元素符号元素名称电子排布式1—36号元素电子排布式20Ca钙1s22s22p63s23p64s221Sc钪1s22s22p63s23p63d14s222Ti钛1s22s22p63s23p63d24s223V钒1s22s22p63s23p63d34s224Cr铬1s22s22p63s23p63d54s125Mn锰1s22s22p63s23p63d54s226Fe铁1s22s22p63s23p63d64s227Co钴1s22s22p63s23p63d74s228Ni镍1s22s22p63s23p63d84s229Cu铜1s22s22p63s23p63d104s130Zn锌1s22s22p63s23p63d104s231Ca镓1s22s22p63s23p63d104s24p132Ge锗1s22s22p63s23p63d104s24p233As砷1s22s22p63s23p63d104s24p334Se硒1s22s22p63s23p63d104s24p435Br溴1s22s22p63s23p63d104s24p536Kr氪1s22s22p63s23p63d104s24p6