(A) Fe [Ar] 4s23☆<☆☆p>6
(☆) ☆☆ [☆☆] 5☆<☆☆p>2...
(A)Fe:[Ar] 3d64s2 (B)Cu:[Ar] 3d104s1 (C)Sn:[Kr] 4d105s25p2 (D)Mg:[Ne] 3s2
12. 下列何者原子電子組態正確? (A) Fe [Ar] 3d64s1 (B..-阿摩線上測驗