Electron Configuration Orbitals. Unit 2. Photoelectric Effect. The emission of electrons from a metal when light shines on the metal. Particle Description of Light A quantum of energy is the minimum quantity of energy that can be lost or gained by an atom.
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The emission of electrons from a metal when light shines on the metal.
Particle Description of Light
A quantum of energy is the minimum quantity of energy that can be lost or gained by an atom.
Max Planck explained relationship between a quantum of energy and the frequency of radiation: E=hv
E=energy in joules
v= frequency is s-1
h= Planck’s constant 6.626 X 10-34 J s
A photon is a particle of electromagnetic radiation with zero mass and carries a quantum of energy.
Just like you can’t have the exact same address as someone an electron can not have the same set of four quantum numbers as another electron.
Diffraction- bending of a wave as it passes the edge of an object or through a small opening
These rules require placing as many unpaired electrons as possible in separate orbitals in the same sublevel. So electron-electron repulsion is minimized so that the electron arrangements have the lowest energy possible.
Because the 4f and 5d orbital are very close in energy, numerous deviations from the simple rules occur as these orbital are filled.