NEET Chemistry
Beryllium: electronic configuration and properties
Beryllium has atomic number 4 and electronic configuration [He] 2s2. Explore its periodic behaviour and open the interactive atom model.
Open Beryllium in 3DKey properties of Beryllium
- Symbol
- Be
- Atomic number
- 4
- Atomic mass
- 9.012182(3)
- Family
- alkaline earth metal
- Electronic configuration
- [He] 2s2
- Shell distribution
- 2, 2
- Oxidation states
- 2
- Standard state
- solid
Periodic behaviour
Atomic radius: 90 pm. Electronegativity: 1.57. First ionisation energy: 900 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 Beryllium.
Related alkaline earth metal elements
Frequently asked questions
What is the electronic configuration of Beryllium?
Beryllium has electronic configuration [He] 2s2, with shell distribution 2, 2.
What are the oxidation states of Beryllium?
The listed oxidation states are 2.
How can I view the Beryllium atom in 3D?
PracticeNEET's interactive periodic table provides a rotatable schematic atom with accurate electron populations by shell.