07-10-10 - o Heisenberg Uncertainty principle which is...

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Thursday, October-07-10 - Poly electronic atoms o Bohr’s model fails due to e- … e- interactions o Introduction of quantum mechanics o Concept of quantized energy levels is retained - Bohr’s model remains valid for all mono electronic species - Why did Bohr’s failed because it cannot show more complex ions o En = - R h Z 2 / h 2 o The reason being was there are more complex ions with more than one energy levels - Quantum mechanics o De Bronglie was explaining that the wav/particle duality of light is applicable to all moving particles So then photons is equivalent to particles so the equation of momentum p =mv = h/ lambda If something has a wavelength then it has momentum One piece of evidence which supports this theory is wave properties of electron beams or wave diffraction See the different patterns created by x-ray vs electrons
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Unformatted text preview: o Heisenberg Uncertainty principle which is applicable to sub-atomic particles In the example with the electron in the atom we see that the value is invalid because the value of v is so off the speed of light and when you compare the mass versus Delta x you see that error and precision is twice under that of m. Therefore we cannot understand were the electron is in the atom. We stop talking about orbits and start talking about orbitals were it is a volume of a certain distance, utilizing the uncertainty principle, we can estimate were the presence of the electron might be. It becomes insignificant and just available in a certain space with probabilities referring to where it most likely will be...
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07-10-10 - o Heisenberg Uncertainty principle which is...

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