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. roma3p64s5 barcelona3s4s83

2020-06-21View Original

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pestic63s2 barcelona3p64s8s83s8s83s8s83s8s8
Reply #22020-06-21
B、3d64s2 解析 26号元素为Fe元素,为副族元素。根据原子核外电子排布规律,其价电子构型为3d64s2
Reply #32020-06-22
B,1s2,2s22p6,3s23p6=18与26差8,3d64s2能量最低。
Reply #42020-06-22
本帖最后由 h20090630 于 2020-6-22 23:08 编辑 B26号Fe的价电子排布为1s22s22p63s23p63d64s2,简化电子排布式为:3d64s2,省去原子实得到外围电子排布式3d64s2,故选B.

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