1. Electron Configuration:
* Arsenic has an atomic number of 33, meaning it has 33 electrons.
* Its full electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³
2. Valence Electrons:
* Valence electrons are the electrons in the outermost energy level (the highest principal quantum number).
* For arsenic, the outermost energy level is n=4.
* This means the valence electrons are in the 4s and 4p orbitals.
3. Valence Electron Configuration:
* The valence electron configuration for arsenic is 4s² 4p³.
In summary:
The valence electron configuration of arsenic is 4s² 4p³. This indicates that arsenic has 5 valence electrons (2 in the 4s orbital and 3 in the 4p orbital).
