Electron configuration Flashcards
What are the 3 principles
Hunds rule, pauli exclusion principle, Aufbau principle
Pauli Exclusion principle
Two electrons occupying the
same orbital must have
opposite spins
Hunds rule
The second electron is not
added to an orbital until every
orbital of the subshell is half
filled
Aufbau principle
Electrons are placed into orbitals in order of
increasing energy
What is the order of sublevels
1s 2s 2p 3s 3p 4s 3d 4p 5s 4d
What is an orbital diagram
When the arrows are above the sublevel, all in one linee
What is an energy diagram
orbital diagram on 2d axis, the higher up the more energy
Orbit vs orbital
Orbit - circular in shape, violates Heisenberg’s uncertainty principle, shown in one plane, max num of electrons in orbit is 2n^2
Orbital - Uses 3 dimensions, region where the electron likely is, max num of electrons in is 2.
how many orientations for p orbital
3
