2s22p62 s^{2} 2 p^{6}2s22p6
3 d104 s24p63 \mathrm{~d}^{10} 4 \mathrm{~s}^{2} 4 \mathrm{p}^{6}3 d104 s24p6
4f45d106p64 f^{4} 5 d^{10} 6 p^{6}4f45d106p6
3s23p63 s^{2} 3 p^{6}3s23p6
(Blank)