Chemistry Orbitals, Quantum #s, and Orbital Filling

Electron configuration

The arrangement of electrons in orbitals around an atomic nucleus

Energy Level

set distance electron can be from the nucleus, based on energy of the electron

Sublevel (s, p, d, f)

s- 2, p-6, d-10, f-14

Orbital

volume of space where electrons are most likely to be found

Principal quantum number

Energy level

Angular momentum quantum number

The orbital shape

Magnetic quantum number

orbital orientation

Spin quantum number

spin direction of an electron

Aufbau Principle

Electrons occupy orbitals in order from lowest to highest energy

Pauli Exclusion Principle 

no 2 electrons can have the same set of 4 quantum numbers

Hund’s Rule

orbitals of equal energy are occupied by 1 electron before adding a 2nd

Electron Configuration Notation

Each occupied sublevel is written followed by a superscript of the number of electrons found in the sublevel 

A region where there is a high probability of finding an electron around the nucleus of an atom

What does an area of high density in an electron cloud represent?