ANSWER
The shell electron configuration of sodium is 2,8,1
The shell electron configration of neon is 2,8
EXPLANATION
Sodium is a group 1 metal and it has an atomic number of 11
Below are very important point to know when filling electrons into the shell
1. The method used in filling electrons into shells is called KLMN
2. The KLMN represents the orbitals and has different energy lelvel
3. The maximum electron K-shell can accommodate is 2 electrons
4. The maximum electrons L-shell can accommodate is 8 electrons
5. The maximum electron M-shell can accommodate is 16 electrons
6. The maximum electron N-shell can accommodate is 32 electrons.
For sodium, we have
In the structure above, the first shell has 2 electrons, the second shell has 8 electrons and the last shell has one electron.
Therefore, the shell electron configuration of sodium is 2,8,1
For Neon
Neon belongs to group 8 and it has an atomic number of 10
The shell electron configration of neon is 2,8
