NEET Chemistry
Chlorine: electronic configuration and properties
Chlorine has atomic number 17 and electronic configuration [Ne] 3s2 3p5. Explore its periodic behaviour and open the interactive atom model.
Open Chlorine in 3DKey properties of Chlorine
- Symbol
- Cl
- Atomic number
- 17
- Atomic mass
- 35.453(2)
- Family
- halogen
- Electronic configuration
- [Ne] 3s2 3p5
- Shell distribution
- 2, 8, 7
- Oxidation states
- -1, 1, 2, 3, 4, 5, 6, 7
- Standard state
- gas
Periodic behaviour
Atomic radius: 99 pm. Electronegativity: 3.16. First ionisation energy: 1251 kJ/mol. Use these values comparatively across a period or group rather than memorising them in isolation.
NEET exam focus
For NEET, prioritise the NCERT electronic configuration, periodic position, common oxidation states, and direct trend-based comparisons involving Chlorine.
Related halogen elements
Frequently asked questions
What is the electronic configuration of Chlorine?
Chlorine has electronic configuration [Ne] 3s2 3p5, with shell distribution 2, 8, 7.
What are the oxidation states of Chlorine?
The listed oxidation states are -1, 1, 2, 3, 4, 5, 6, 7.
How can I view the Chlorine atom in 3D?
PracticeNEET's interactive periodic table provides a rotatable schematic atom with accurate electron populations by shell.