Atomic Orbital
region of high probability of finding an electron
Aufbau Principle
Tendency of electrons to enter orbitals of lowest energy first
Electron Configuration
arrangement of electrons around atomic nucleus
Ground State
lowest energy level
Pauli Exclusion Principle
each orbital has at most two electrons
Heisenberg uncertainty principle
States the impossibility of know both velocity and position of a moving particle at the same time
Atomic Emission Spectrum
frequencies of light emitted by an element
Frequency
number of wave cycles passing a point per unit of time
Wavelength
Distance between wave crests
Photon
discrete bundle of electromagnetic energy
Quantum
energy needed to move an electron from one energy level to another
Spectrum
Separaton of light into different wavelengths
Energy Level
the fixed energies an electron can have
Hund's Rule
states that electrons occupy orbitals of the same energy in a way that makes the number of electrons with the same spin direction as large as possible
Excited State
highest energy level
Octet Rule
states that atoms react by gaining or losoing eletrons so as to acquire the stable electron structure of a noble gas, ususally eight valance electrons