Atomic Structure - Quantum Mechanical Model of the Atom

4 important questions on Atomic Structure - Quantum Mechanical Model of the Atom

Contribution of Louis DeBroglie

1. suggested wave-particle duality:
  • elementary particles of both energy & matter behave (dep. on conditions) like particles or waves


2. In exps, demonstrated tht a beam of e-s could be bent/diffracted
  • by passing thru a crystal (thru a prism)

Werner Heisenberg's contribution?

Proved tht wave/particle nature of the e- made it impossible to determine both its position & momentum @ same time
  • ∴ exact location of an e- cannot be determined

What is Heisenberg Uncertainty Principle (HUP)?

If we know energy of an e-, as we do when its in a particular energy lvl, we cannot know its position in space
  • measuring 1 property interferes w/ or alters the other when observing position & momentum
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Erwin Schrödinger's contribution?

Developed mathematical eq: "Shrödinger's Wave Equation"
  • gives probability of finding e- location
  • a solution to the eq produces a set of 3 quantum numbers

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