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Quantum mechanical model Transitional Reasoning Practice

Chemistry · Atomic Structure · Chemistry · Models of the Atom

1 Chemistry practice questions on Quantum mechanical model. Questions that build towards applied reasoning.

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Questions

  1. 1.

    A chemistry student compares two computer simulations of a ground-state hydrogen atom: Simulation 1 shows the electron travelling continuously along a discrete circular ring of radius 52.9 pm, whereas Simulation 2 displays a three-dimensional cloud of varying dot density surrounding the nucleus. The student is asked to determine which simulation aligns with modern atomic theory and why. Based on the quantum mechanical model of the atom, which evaluation is correct?

    • A) Simulation 1 is correct because Heisenberg's uncertainty principle confirms that an electron maintains a fixed radius whenever its orbital energy is quantized.
    • B) Simulation 2 is incorrect because ground-state electrons are strictly confined to a single two-dimensional plane rather than a spatial volume.
    • C) Simulation 1 is correct because knowing the exact momentum of an electron enables simultaneous tracking of its precise geometric trajectory.
    • D) Simulation 2 is correct because the wave nature of the electron defines spatial regions of probability density rather than a deterministic, predictable path.

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