Meaning of aufbau principle | Babel Free
Definitions
The rule stating that, in the ground state of an atom or ion, electrons fill subshells of the lowest available energy, followed by subshells of higher energy.
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.