10 element is a rare gas, and the outermost layer is 8? ? The electronic teacher said, "Can't the outermost layer rank 8?" ? "... what is the education level of this teacher-

-

Specific arrangement rules:

1, the most important principle, the lowest energy. All the principles of electronic configuration should minimize the energy of atoms.

2. Hunting rules.

3. Pauli exclusion principle. The same atom does not exist 4? ? Electrons with the same quantum number.

4. Empirical formula. According to the size of n+0.7L, the small one is in front and the big one is in the back. N is principal quantum number. K layer is 1, L layer is 2 ... and so on. L is the subsidiary quantum number. The S sublayer is 1, the P sublayer is 2 ... and so on.

5. chanting. "Each layer row 2nn? ? , the outermost layer does not exceed 8? ? , the secondary outer layer does not exceed 18? ? ……"