Quantum Mechanical Model of the Atom

Which shape represents the shape of an "s" orbital?

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Which shape represents the shape of an "p" orbital?

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Compare and contrast the Bohr Model and the Quantum Model of the atom. Describe at least two key similarities and at least one key difference.

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There are four different orbital shapes. Select them from the following list.

• "s"

• "f"

• "g"

• "d"

• "p"

In the quantum mechanical model of the atom, where are electrons most likely to be found?

• Moving in fixed orbits around the nucleus

• Embedded within the nucleus

• In specific regions called electron clouds or orbitals

• Uniformly distributed around the nucleus

In the quantum-mechanical model of the atom, an orbital is defined as a

• region of the most probable proton location.

• region of the most probable electron location.

• circular path traveled by an electron around an orbital.

• circular path traveled by a proton around an orbital.

Answer explanation

In the quantum-mechanical model of the atom, an orbital is defined as a region of the most probable electron location.

What is the fundamental difference between the Bohr model of an atom and the quantum mechanical model? Select all that apply.

• Bohr model considers electron to be a particle; quantum mechanics considers it to be a wave.

• Bohr model describes electron with 1 quantum number; quantum model uses 4 quantum.

• Bohr model describes electrons in orbits; quantum model describes electrons in orbitals.

What is similar about the Bohr model of the atom and the quantum mechanics model? Both consider

• electrons to be a particle in a definite position at a given time.

• electrons to emit a photon when moving from a higher state to a lower state.

• electrons to be particles moving in circular orbits.

• electrons to be spread out in space that can be described by quantum numbers.

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Which scientist(s) proved we do not know the location of electrons...

• Schrodinger/Heisenberg

• Bohr

• Rutherford

• Thomson

Which shape represents the shape of an "d" orbital?

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