来自陈听雨的问题
写出下列微粒的基态电子排布式(1)Li___(2)Na___(3)Fe___(4)Ar___(5)Fe2+___(6)Cr___.
写出下列微粒的基态电子排布式
(1)Li___
(2)Na___
(3)Fe___
(4)Ar___
(5)Fe2+___
(6)Cr___.
1回答
2020-05-06 15:51
写出下列微粒的基态电子排布式(1)Li___(2)Na___(3)Fe___(4)Ar___(5)Fe2+___(6)Cr___.
写出下列微粒的基态电子排布式
(1)Li___
(2)Na___
(3)Fe___
(4)Ar___
(5)Fe2+___
(6)Cr___.
(1)Li元素为3号元素,原子核外有3个电子,分两层排布,所以核外电子排布式为:1s22s1,
故答案为:1s22s1;
(2)Na元素为11号元素,原子核外有11个电子,分三层排布,所以核外电子排布式为:1s22s22p63s1,
故答案为:1s22s22p63s1;
(3)Fe元素为26号元素,原子核外有26个电子,分四层排布,所以核外电子排布式为:1s22s22p63s23p63d64s2,
故答案为:1s22s22p63s23p63d64s2;
(4)Ar元素为18号元素,原子核外有18个电子,分三层排布,所以核外电子排布式为:1s22s22p63s23p6,
故答案为:1s22s22p63s23p6;
(5)铁原子失去最外层4s能级2个电子,形成Fe2+,核外电子排布式为:1s22s22p63s23p63d6;
故答案为:1s22s22p63s23p63d6;
(6)Cr元素为24号元素,原子核外有24个电子,其电子排布式为1s22s22p63s23p63d54s1,故答案为:1s22s22p63s23p63d54s1.