NEET Chemistry
Arsenic: electronic configuration and properties
Arsenic has atomic number 33 and electronic configuration [Ar] 3d10 4s2 4p3. Explore its periodic behaviour and open the interactive atom model.
Open Arsenic in 3DKey properties of Arsenic
- Symbol
- As
- Atomic number
- 33
- Atomic mass
- 74.92160(2)
- Family
- metalloid
- Electronic configuration
- [Ar] 3d10 4s2 4p3
- Shell distribution
- 2, 8, 18, 5
- Oxidation states
- -3, 2, 3, 5
- Standard state
- solid
Periodic behaviour
Atomic radius: 119 pm. Electronegativity: 2.18. First ionisation energy: 947 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 Arsenic.
Related metalloid elements
Frequently asked questions
What is the electronic configuration of Arsenic?
Arsenic has electronic configuration [Ar] 3d10 4s2 4p3, with shell distribution 2, 8, 18, 5.
What are the oxidation states of Arsenic?
The listed oxidation states are -3, 2, 3, 5.
How can I view the Arsenic atom in 3D?
PracticeNEET's interactive periodic table provides a rotatable schematic atom with accurate electron populations by shell.