NEET Chemistry
Oxygen: electronic configuration and properties
Oxygen has atomic number 8 and electronic configuration [He] 2s2 2p4. Explore its periodic behaviour and open the interactive atom model.
Open Oxygen in 3DKey properties of Oxygen
- Symbol
- O
- Atomic number
- 8
- Atomic mass
- 15.9994(3)
- Family
- nonmetal
- Electronic configuration
- [He] 2s2 2p4
- Shell distribution
- 2, 6
- Oxidation states
- -2, -1, 1, 2
- Standard state
- gas
Periodic behaviour
Atomic radius: 73 pm. Electronegativity: 3.44. First ionisation energy: 1314 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 Oxygen.
Related nonmetal elements
Frequently asked questions
What is the electronic configuration of Oxygen?
Oxygen has electronic configuration [He] 2s2 2p4, with shell distribution 2, 6.
What are the oxidation states of Oxygen?
The listed oxidation states are -2, -1, 1, 2.
How can I view the Oxygen atom in 3D?
PracticeNEET's interactive periodic table provides a rotatable schematic atom with accurate electron populations by shell.