Technetium: electronic configuration and properties
Technetium has atomic number 43 and electronic configuration [Kr] 4d5 5s2. Explore its periodic behaviour and open the interactive atom model.
Open Technetium in 3DKey properties of Technetium
- Symbol
- Tc
- Atomic number
- 43
- Atomic mass
- 98
- Family
- transition metal
- Electronic configuration
- [Kr] 4d5 5s2
- Shell distribution
- 2, 8, 18, 13, 2
- Oxidation states
- -3, -1, 1, 2, 3, 4, 5, 6, 7
- Standard state
- solid
Periodic behaviour
Atomic radius: 156 pm. Electronegativity: 1.9. First ionisation energy: 702 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 Technetium.
Related transition metal elements
Frequently asked questions
What is the electronic configuration of Technetium?
Technetium has electronic configuration [Kr] 4d5 5s2, with shell distribution 2, 8, 18, 13, 2.
What are the oxidation states of Technetium?
The listed oxidation states are -3, -1, 1, 2, 3, 4, 5, 6, 7.
How can I view the Technetium atom in 3D?
PracticeNEET's interactive periodic table provides a rotatable schematic atom with accurate electron populations by shell.