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.

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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