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### 22 Cards in this Set

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 Amplitude The height of a wave's crest Atomic Emission Spectrum The pattern formed when light passes through a prism or diffreaction grating to separate it into the different frequencies of light it contains Atomic Orbital A mathematical expression describing the probability of finding a electron at various locations; usually represented by the region of space around thte nucleus when there is a high probability of finding an electron Aufbau Principle The rule that electrons occupy the orbitals of lowest energy first Electromagnetic Radiaiton Energy waves that travel in a vacuum at a speed of 2.998 x 10 m/s; includes radio waves, microwaves, infrared waves, visible light, ultraviolet waves, X-rays, and gamma rays Electron configurations The arrangement of electrons of an atom in its ground state into various orbitals around the nuclei of atoms Energy Levels The specific energies an electron in an atom or other system can have Frequency The number of wave cycles that pass a given point per unit of time; frequency and wavelength are inversely proportional to each other. Ground State The lowest possible energy of an electron described by quantum mechanics Heisenberg Uncertainty Principle It is impossible to know exactly both the velocity and the position of a particle at the same time Hertz The unit of frequency, equal to one cycle per second Hund's rule The 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 Pauli Exclusion Principle An atomic orbital may describe at most two electrons, each with opposite spin direction Photons A quantum of light; a discrete bundle of electromagnetic energy that interacts with matter similarity to particles Quantum The amount of energy needed to move an electron from one energy level to another Quantum Mechanical Model The modern description, primarily mathematical, of the behavior of electrons in atoms Spectrum Wavelengths of visible light that are separated when a beam of light passes through a prism; range of wavelength of electromagnetic radiation Wavelength The distance between adjacent crests of a wave siempre always nunca never tambien also, too tampoco neither, either