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Chem ch 6 vocab


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The amount of energy needed to move an electron from one energy level to another
The height of a ware's crest
Pauli exclusion principle
An atomic orbital may describe at most two electrons, each with opposite spin direction
Electromagnetic radiation
Energy waves that travel in a vacuum at a speed of 2.998 x 10 to the 8th m/s; includes radio waves, microwaves, infraned waves, visible lights, ultraviolet waves, x-rays, and gamma rays
The number of wave cycles that pass a given point per unit of time
Quantum Mechanical model
The modern description primarily mathematical of the behavior of electrons in atoms
Wavelengths of visible light that are seperated when a beam of light passes through a prisms range of wavelengths of electromagnetic radiation
Aufbau principle
The rule that electrons occupy orbitals of lowest energy first
Hund's rule
Electrons occupy orbitals of the same energy in a way that makes the number or electrons with the same spin direction as large as possible
Ground state
The lowest possible energy of an electron describe by Quantum Mechanics
A quantum of light; a discrete bundle of electro magnetic energy that interacts with matter similarly to particles
Electron configuration
The arrangement of electrons of an atom in its ground state into various orbitals around the nuceli of atoms
The distance between adjacent crests of a wave
Atomic emission spectrum
The pattern formed when light passes through a prism or diffraction grating to seperate it into the different frequencies of light it contains
Energy level
The specific energies an electron in an atom or other systems can have
Atomic orbital
A mathematic expression describing the probability of finding an electron at various locations; usually represented by the region of space around the nucleus where there is a high probability of finding an electron
The unit of frequency, equal to one cycle per second
Heisenberg uncertainty principle
It is impossible to know exactly both the velocity and the position of a particle at the same time

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