Sure, let's determine the noble gas notation for chlorine following a step-by-step approach:
1. Identifying the Atomic Number: Chlorine has an atomic number of 17, which means it has 17 electrons.
2. Writing the Electron Configuration: If we follow the Aufbau principle for filling electron orbitals, the electron configuration for chlorine is:
- 1s²: 2 electrons in the 1s orbital
- 2s²: 2 electrons in the 2s orbital
- 2p⁶: 6 electrons in the 2p orbital
- 3s²: 2 electrons in the 3s orbital
- 3p⁵: 5 electrons in the 3p orbital
Putting this together, the complete electron configuration for chlorine is:
1s² 2s² 2p⁶ 3s² 3p⁵
3. Finding the Previous Noble Gas: The noble gas preceding chlorine in the periodic table is neon, which has the electron configuration:
1s² 2s² 2p⁶
This configuration represents neon, effectively accounting for 10 electrons.
4. Using Noble Gas Notation: To simplify the electron configuration of chlorine, we can replace the portion corresponding to neon with [Ne]. Therefore, the noble gas notation for chlorine is:
[Ne] 3s² 3p⁵
Now, let's compare this with the given choices:
- [tex]$[Ne] 4s^2 4p^5$[/tex]
- [tex]$[Ne] 3s^2 3p^5$[/tex]
- [tex]$[Ne] 3s^2 3p^3$[/tex]
- [tex]$[Ne] 3p^2 3p^5$[/tex]
The correct answer is:
[tex]\[ [Ne] 3s^2 3p^5 \][/tex]
So, the noble gas notation for chlorine is:
[tex]\[ [Ne] 3s^2 3p^5 \][/tex]
