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
Wave’s height from origin to a crest, or the origin to a trough
Electromagnetic Specrtum
Encompasses all forms of ER, with the only difference in the types of radiation being their frequencies and wavelengths
Quantum
The minimum amount of energy that can be gained or lost by an atom
Planck’s constant

6.626 X 10-34J

J=Joule, SI unit for energy

Photoelectric effect
Electrons emitted from 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
Set of frequencies of the electromagnetic waves emitted by atoms of the element
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