1) 1s22s22p5 2) 1s1 3) 1s22s22p63s1 4) 1s22s22p63s23p4 5) 1s22s2 6) 1s22s22p63s23p64s23d104p5 7) 1s22s22p63s23p64s23d5 8) 1s22s22p63s2 9) 1s22s22p6 10) 1s22s22p63s23p64s23d4 11) 1s22s22p63s23p6 12) 1s22s22p2 13) 1s22s22p63s23p64s1 14) 1s22s22p4 15) 1s22s22p63s23p64s23d104p6

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