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chapter 5 vocab.....

terms and definitions

electromagnetic radiation a form of energy that exhibits wave like behaviors as it travels through space
wave length a shortest distance between equivalent points on a continuous wave
frequency the number of waves that pass a certain point per second
amplitude a waves height from the origin to the crest or from the origin to a trough
electromagnetic spectrum consist of all forms of the electromagnetic radiation with the only differences being their frequency and waves length
quantum the minnimum amount of energy that can gained or lost by an atom
photoelectric effect electrons called photoelectrons are emitted from a metal's surface when light of a certain frequency shines on the surface
photon a particle of a electromagnetic radiation with no mass that carries a quantum of energy
atomic emission spectrum the set of frequencies of the electromagnetic waves emitted by atoms of the elements
ground state the lowest allowable energy state of an atom
de Broglie equation predicts that all moving particles have wave characteristics
Heisenberg uncertainty principle states that it is fundamentally impossible to know both the velocity and position of a particle at the same time
atomic orbital a three dimensional region around the nucleus
principle quantum numbers indicates the relative sizes and energies of an atomic orbital
principle energy levels atoms major energy levels
energy sublevels atoms principle energy levels
electron configuration arrangement of electrons in an atom
aufbau principle states that each electron occupies the lowest energy orbital available
pauli exclusion principle states that a maximum of two electrons may occupy a single atomic orbital but only if the electrons have opposite spins
hund's rule states that single electrons with the same spin must occupy equal energy orbital before additional electrons with opposite spins can occupy the same orbitals
valence electrons electrons in the atom's outermost orbital
electron-dot structure consist of the element's symbol which represents the atomic nucleus and inner-level electrons surrounded by dots representing the atom's valence electrons
Created by: Shaquika