Let’s examine the noble gas configurations for eight elements.
1. Sodium (Na)
The atomic number of sodium is 11. Its electronic configuration is 1s² 2s² 2p⁶ 3s¹. The noble gas configuration for sodium is [Ne] 3s¹.
2. Magnesium (Mg)
The atomic number of magnesium is 12. Its electronic configuration is 1s² 2s² 2p⁶ 3s². The noble gas configuration for magnesium is [Ne] 3s².
3. Aluminum (Al)
The atomic number of aluminum is 13. Its electronic configuration is 1s² 2s² 2p⁶ 3s² 3p¹. The noble gas configuration for aluminum is [Ne] 3s² 3p¹.
4. Silicon (Si)
The atomic number of silicon is 14. Its electronic configuration is 1s² 2s² 2p⁶ 3s² 3p². The noble gas configuration for silicon is [Ne] 3s² 3p².
5. Phosphorus (P)
The atomic number of phosphorus is 15. Its electronic configuration is 1s² 2s² 2p⁶ 3s² 3p³. The noble gas configuration for phosphorus is [Ne] 3s² 3p³.
6. Sulfur (S)
The atomic number of sulfur is 16. Its electronic configuration is 1s² 2s² 2p⁶ 3s² 3p⁴. The noble gas configuration for sulfur is [Ne] 3s² 3p⁴.
7. Chlorine (Cl)
The atomic number of chlorine is 17. Its electronic configuration is 1s² 2s² 2p⁶ 3s² 3p⁵. The noble gas configuration for chlorine is [Ne] 3s² 3p⁵.
8. Argon (Ar)
The atomic number of argon is 18. Its electronic configuration is 1s² 2s² 2p⁶ 3s² 3p⁶. The noble gas configuration for argon is [Ne] 3s² 3p⁶ or simply [Ar].