The electronic configuration for atomic number 11 (Sodium) is:

1s² 2s² 2p⁶ 3s¹

Or in the condensed form:

[Ne] 3s¹

Breakdown:

– 1s²: 2 electrons in the 1s orbital
– 2s²: 2 electrons in the 2s orbital
– 2p⁶: 6 electrons in the 2p orbital
– 3s¹: 1 electron in the 3s orbital

Some key properties of Sodium:

1. Symbol: Na
2. Atomic Mass: 22.9898
3. Atomic Radius: 186 pm
4. Electronegativity: 0.93
5. Group: 1 (Alkali metals)
6. Period: 3
7. Block: s-block

Sodium is essential for:

1. Biological processes (nerve function, muscle contraction)
2. Table salt (NaCl)
3. Soap and detergent manufacturing
4. Textile and paper production

Would you like to explore more about Sodium or its applications?