[问答题]
Each element contains a differevoz *8cxuy6xf. 5r ,vyl+-om bnt arrangement of electrons, and these electrd (m;-)neg6 ysgu gb-zon configurations can also be represented usin) (m-nbgg ;deyzu-g6sg orbital diagrams. Determine the identity of each element described below.
1.$1s^2$ $2s^2$ $2p^6$ $3s^2$ $3p^6$ $4s^1
2.$[Ne] $3s^2$ $3p^6$
3.In Period 33 with valence electrons of $3s^2$
4. 5.An ion with +1 charge, with valence electrons of:
