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Ch. 5-

Electrons in Atoms

Electromagnetic Radiation a form of energy that exhibits wavelike behavior as it travels through space
Wavelength the shortest distance between equivalent points on a continuous wave
Frequency the number of waves that pass a given point per second
Amplitude the waves hieght from the orgin to a crest,or from the orgin to a trough
Electromagnetic spectrum encompasses all forms of electromagnetic radiation,with the only diffference in the types of tradition being their frequencies and wavelenghts
Quantum the minimum amount of energy that can be gained or lost by an atom
Planack's constant which has a value of 6.626*10-34J*s,where J is the symbol for a joule
photoelectric effect electrons,called photoelectrons,are emitted from a metal's surface when a light of a certain frequency shines on surface
photon a particle of electromagnetic radiation with no mass that carries a quantum of energy
atomic emission spectrum a set of frequencies of electromagnetic waves of given off by atoms of an element,consists of a series of line of indivisual colors
ground state the lowest allowable energy state of an atom
de Broglie equation predicts that all moving paeticles have wave characters
Heisenberg uncertainly principle 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 is the called the wave mechanical model of the atom
atomic orbital a three-demensional region around the nucleus
principal quantum number indicate the relative sizes and energies of atomic orbitals
principal energy level specifies the atom's major energy level
energy sublevels the energy levels that contained within a principle energy level
Created by: nastachiea