CHM 117 Study guide

The ultra-violet catastrophe lead to..
Plancks quantum theory
The stability of certain electron orbits in an atom may be explained by a standing wave concept involving wavelike electrons.
Louis De Broglie
Almsot all of the mass of an atom appears to be localized in an extremely small central region called the nucleus.
Ernest Rutherford
Electrons in atoms only occupy certain allowed orbits in which they can stay indefinitely without emitting radiation; jumps between these orbits are associated with emission or absorption of radiation.
Neils Bohr
The fact that photoelectrons are emitted from the surface of a metal with excess kinetic energy when light of a short wavelength strikes the surface results from the fact that the energy of a quantum of light, or photon, is transferred completely to a single electron
Albert Einstein
The fact that photoelectrons are emitted from the surface of a metal with excess kinetic energy when light of a short wavelength strikes the surface results from the fact that the energy of a quantum of light, or photon, is transferred completely to a single electron
Albert Einstein
wave equation for electrically charged wavelike particles
erwin schrodinger
identified the nature of gamma radiation
ernest rutherford
speculated that all atoms are built up from hydrogen atoms
William Prout
Matter and energy are interconvertible
albert einstein
measured charge/mass ratio for the electron
JJ thompson
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