Question

Describe the quantum mechanical model of the atom. Why is this model more accurate than the classical model?

**Please Type Answer and No Plagiarism!**

Answer #1

Apply quantum mechanical concepts to answer the following
question: why does the hydrogen atom in its ground state have a
finite size? Recall that one of the critical limitations of
classical mechanics is its failure in identifying the ground state
of the hydrogen atom. Obtaining such knowledge is critical for
chemists to predict the “size” of the atom, crucial for
understanding molecular geometries, steric effects,packing in
solids, and so forth. In this problem, you apply quantum mechanics
to resolve this...

2. (A) Cite two important quantum-mechanical concepts
associated with the Bohr model of the atom. (B) Cite two important
additional refinements that resulted from the wave-mechanical
atomic model.

Why do modern physics and quantum mechanics have more in common
with music than classical physics?

Why do modern physics and quantum mechanics have more in
common with music than classical physics?

Physical Chemistry: Ch 11 Quantum Mechanics: Model Systems and
the Hydrogen Atom
(a)A hydrogen atom bonded to a surface is acting as a harmonic
oscillator with a classical frequency of 6.000 × 1013 s
−1 . What is the energy difference in J between
quantizedenergy levels? (b) Calculate the wavelength of light that
must be absorbed in order for the hydrogen atom to go from one
level to another. (c) To what region of the electromagnetic
spectrum does such a...

We know that Bohr model (i.e., the “old” quantum mechanics) for
the hydrogen atom is a semiclassical model and is not (always)
consistent with quantum mechanics. Specifically, it is not (always)
consistent with the uncertainty principle. Show why.

Use a classical analogy to explain why it makes sense that a
quantum mechanical particle-in-a-box has an average momentum of
zero even though it has a non-zero kinetic energy? [particle,
box, momentum, positive, negative, zero, kinetic energy, non-
zero...]

In the simplest quantum mechanical model of energy levels of a
conducting polymer, how long must the polymer chain be for the gap
between the HOMO and LUMO levels to be smaller than room
temperature thermal energies?

In the simplest quantum mechanical model of energy levels of a
conducting polymer, how long must the polymer chain be for the gap
between the HOMO and LUMO levels to be smaller than room
temperature thermal energies?

Why might it be more accurate to describe a sinking fund
as a bond redemption fund? please explain

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