NEET Chemistry
Indium: electronic configuration and properties
Indium has atomic number 49 and electronic configuration [Kr] 4d10 5s2 5p1. Explore its periodic behaviour and open the interactive atom model.
Open Indium in 3DKey properties of Indium
- Symbol
- In
- Atomic number
- 49
- Atomic mass
- 114.818(3)
- Family
- metal
- Electronic configuration
- [Kr] 4d10 5s2 5p1
- Shell distribution
- 2, 8, 18, 18, 3
- Oxidation states
- 1, 2, 3
- Standard state
- solid
Periodic behaviour
Atomic radius: 144 pm. Electronegativity: 1.78. First ionisation energy: 558 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 Indium.
Related metal elements
Frequently asked questions
What is the electronic configuration of Indium?
Indium has electronic configuration [Kr] 4d10 5s2 5p1, with shell distribution 2, 8, 18, 18, 3.
What are the oxidation states of Indium?
The listed oxidation states are 1, 2, 3.
How can I view the Indium atom in 3D?
PracticeNEET's interactive periodic table provides a rotatable schematic atom with accurate electron populations by shell.