abbreviated electron configuration = e.c.
The electron configuration of selenium for a 2- ion is [Kr]4s2.3d10.4p6.
[Kr]
4s2 4p4
The electron configuration of nobelium is [Rn]5f14.7s2.
abbreviated electron configuration = e.c.
The abbreviated electron configuration of sodium is [Ne]3s1.
The electron configuration of selenium for a 2- ion is [Kr]4s2.3d10.4p6.
The electron configuration of boron is [He]2s2.2p1.
The electron configuration of selenium is [Ar]3d10.4s2.4p4.
The element argon (atomic number 18) has the electron configuration 1s22s22p63s23p6 which can be abbreviated [Ne] 3s23p6
no...
[Kr]
4s2 4p4
The electron configuration of nobelium is [Rn]5f14.7s2.
Se2- 1s22s22p63s23p64s23d104p6
[He] 2s one