Born-Haber cycle 1 Electron Configurations of Metals and Non-metals from Representative Elements Cations derived from metals of Groups 1A and 2A and that of Al 3+ , as well as anions derived from non- metals of Groups 5A, 6A, and 7A, all acquire the electron configurations of the noble gases. Ions having the same electron configuration as Ne ([He] 2s 2 2p 6 ): Na + , Mg 2+ , Al 3+ , F - , O 2- , and N 3- ; Ions having the same electron configuration as Ar ([Ne] 3s 2 3p 6 ): K + , Ca 2+ , Sc 3+ , Cl - , S 2- , and P 3- Ions having the same electron configuration as Kr ([Ar] 4s 2 3d 10 4p 6 ): Rb + , Sr 2+ , Y 3+ , Br - , and Se 2- ; Ions having the same electron configuration as Xe ([Kr] 5s 2 4d 10 5p 5 ): Cs + , Ba 2+ , La 3+ , I - , and Te 2- ; _____________________________________________________________________________________
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Born-Haber cycle
1
Electron Configurations of Metals and Non-metals from Representative Elements
Cations derived from metals of Groups 1A and 2A and that of Al3+
, as well as anions derived from non-
metals of Groups 5A, 6A, and 7A, all acquire the electron configurations of the noble gases.
Ions having the same electron configuration as Ne ([He] 2s2 2p
6): Na
+, Mg
2+, Al
3+, F
-, O
2-, and N
3-;
Ions having the same electron configuration as Ar ([Ne] 3s23p
6): K
+, Ca
2+, Sc
3+, Cl
-, S
2-, and P
3-
Ions having the same electron configuration as Kr ([Ar] 4s23d
104p
6): Rb
+, Sr
2+, Y
3+, Br
-, and Se
2-;
Ions having the same electron configuration as Xe ([Kr] 5s24d