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chapter 5 vocabulary


electromagnetic radiation is a form of energy that exhibits wavelike behavior as it travels space.
wavelength the length, frenquency, amplitude, and speed.
frenquency is the number of waves that pass a given point per second.
amplitude is the wave's height from the origin to a crest or from the origin to a trough
electromagnetic spectrum encompasses all forms of electomagnetic radiation
quantum is the minimum amount of energy that can be gained or lost
planck's constant has the value of 6.626x10^-34 J*s where j is the symbol for joule the SI unit of energy
photoelectric effect photoeletrons are emitted from a metal surface when light of a certain frequency shines on the surface.
photon is a particle of electromagnetic radiation with no mass that carries a quantum of energy
atomic emission spectrum is an element is the set of frequencies of the electromagnetic waves emitted by atoms of the element
ground state the lowest allowable energy state of an atom
de Brogile equation predicts that all moving particles have wave characteristics.
Heisenberg uncertainty states that it is fundamentally impossible to know precisely both the velocity and position of a particle at the same time.
quantum mechanical model of the atom the atomic model in which electrons are treated as waves
atomic orbital three dimensional region around the nucleus describes the electron's probable location
principla quantum numbers indicate the relative sizes and energies of atomic orbitals.
principal energy levels n specifies the atoms major energy levels
energy sublevels part of 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 electronsmay occupy a single atomic orbital.
hunds rule states that a singleelectrons with the same spinmust occupyeach equal energy orbital before additional electrons with opposite spins can occupy same orbitals
electron dot structure consists of the elements symbol which represents the atomic nucleus and inner level electrons surrounded by dots representing the atoms valence electrons