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Electrons

TermDefinition
Cation Positively charged ION
Anion Negatively charged ION
Energy Levels The possible energies electrons can have
Quantum Discrete packet of energy or matter
Quantum Mechanical Model Based on probability
Atomic Orbital Mathematical function that describes the wave-like behavior of electrons
Electron Configuration Distribution of electrons
Aufbau Principle Electrons fill lowest orbitals first
Pauli Exclusion Principle Each orbital can hold 2 electrons with opposite spins
Hund's Rule Within a sub-level, place one electron before per orbital before pairing
Wavelength On a periodic curve, the length between to consecutive troughs
Frequency Numbers of peaks that pass a stationary point
Hertz The SI derived unit used to measure the frequency of vibrations
Electromagnetic Radiation Radiation originating in a varying magnetic field
Atomic Emission Spectrum Each element has a unique bright line emission spectrum
Ground State Lowest or most stable state of an atom
Photons Quantum of Electromagnetic radiation that describes the particle properties of an electromagnetic wave
Heisenberg Uncertainty Principle Impossible to know the velocity and position of an electron at the same time
Periodic Law Properties of the elements are periodic functions of their atomic number
Atomic Radius Measure of the size of its atoms
Ionization Energy Energy required to remove one electron from a neutral atom
Electronegativity Measure of the tendency of an atom to attract electrons
Created by: Dante T.
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