Electron Configuration & Orbital Diagrams Flashcards
1
Q
Aufbau Principle
A
Electrons occupy the lowest energy orbital available
2
Q
Hund’s Rule
A
Half fill every orbital of a sublevel before a second electron can occupy the same orbital
3
Q
Pauli’s exclusion principle #1
A
No 2 electrons in an atom can have the same 4 quantum numbers
4
Q
Pauli’s exclusion principle #2
A
No two electrons in the same orbital can have the same spin
5
Q
S and P blocks…
A
n=period
6
Q
D block…
A
n = period - 1
7
Q
F block…
A
n = period - 2
8
Q
What does isoelectric mean?
A
Same number of electrons to a noble gas
9
Q
How to show atoms in an excited state
A
- Indicated with a *
- Move 1 valence electron to the next energy level to show excited state
10
Q
Configuration for anions
A
Add electrons to the lowest energy orbital available
11
Q
Configuration for cations
A
Remove electrons from the sublevel with the highest value of n
12
Q
Atoms with exceptions to general rules
A
- Copper
- Chromium
- Molybdenum
- Silver
