Chapter 5 - Electrons In Atoms Flashcards
Wavelength
Is the shortest distance between equivalent points on a continuous wave.
Electromagnetic Radiation
A form of radiation that exhibits wavelike behavior as it travels through space.
Frequency
Number of waves that past a given point per second.
Amplitude
The wave’s hight from the origin to the crest.
Electromagnetic spectrum
Aka EM spectrum, encompasses all forms of electromagnetic radiation, with the only differences in the types of radiation being their frequencies and their wavelengths.
Quantum
The minimum amount of energy that can be gained or lost by an atom.
Planck’s Constant
6.626 X 10^-34J
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 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 precisely both the velocity and position at the same time.
Quantum mechanical model of the atom
The atomic model in which electrons are treated as waves.
Atomic orbital
A three dimensional region around the nucleus.
