Atomic Structure Flashcards
1
Q
Quantum Definition
A
amount of energy required to move an election from one energy level to another
2
Q
What is Principal Quantum Number
A
Energy Levels (n)
3
Q
What is Secondary Quantum Number
A
Sublevels (I)
s, p, d, f,
I starts at zero
4
Q
What is Third Quantum Number?
A
The Orbitals (mI)
- each orbital holds max of 2 electrons
5
Q
What is Fourth Quantum Number
A
the direction of electron spin (ms)
6
Q
Aufbau principle
A
Electrons occupy the lowest energy first
7
Q
Pauli Exclusion Principle
A
No two e- can have the same 4 quantum numbers
8
Q
Hunds Rule
A
When elections occupy orbitals of energy, they don’t pair up until they have to
9
Q
Stability
A
- stable electron configuration is no longer exclusive to the octet rule
- it incIudes atoms containing valance electrons
Best Stability
- fill an energy level
- fill a subshell
- half fill a subshell
Worst Stability
10
Q
Electron Configuration Exceptions
A
i d k
