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- 1. Multiple Choice
Who proposed that electrons are only found in specific, discrete circular orbits around the nucleus?
Albert Einstein
Erwin Schrodinger
Ernest Rutherford
Niels Bohr
- 2. Multiple Choice
If n = 3, what is the maximum number of electrons that can fit in this shell?
2
8
18
32
- 3. Multiple Choice
What is the difference in a 1s orbital and a 2s orbital?
The shape of the orbital
The size of the orbital
The number of electrons it can hold
None of the above
- 4. Multiple Choice
Which quantum number represents the shape of the orbital?
principal quantum number
azimuthal (angular momentum) quantum number
magnetic quantum number
spin quantum number
- 5. Multiple Choice
Which of the following values does NOT represent a valid electron?
n=(2), l=(1), ml=(1), ms=(+1/2)
n=(4), l=(2), ml=(-1), ms=(-1/2)
n=(2), l=(0), ml=(0), m=(-1/2)
n=(4), l=(2), ml=(-3), ms=(+1/2)
- 6. Multiple Choice
When atoms _____________ energy, their electrons move to higher energy levels. These electrons _____________ energy by emitting light when they return to lower energy levels.
lose, absorb
absorb, lose
lose, lose
absorb, absorb
- 7. Multiple Choice
Which quantum number represents the orientation of the orbital?
principal quantum number
azimuthal (angular momentum) quantum number
magnetic quantum number
spin quantum number
- 8. Multiple Choice
Heisenberg's Uncertainty Principle states that it is impossible to know both the ___________ and the __________ of a particle at the same time.
velocity, position
velocity, energy
position, energy
velocity, speed
- 9. Multiple Choice
What states that every orbital of a subshell must be singly occupied before any orbital can have a pair?
Pauli exclusion principle
Hund's rule
Aufbau principle
None of the above
- 10. Multiple Choice
This states that no two electrons will have the same 4 quantum numbers in an atom or molecule. The two electrons of the same orbital must have opposite spin states.
Pauli exclusion principle
Hund's rule
Aufbau principle
None of the above
- 11. Multiple Choice
What states that electrons fill the lowest energy orbitals/levels first before occupying higher energy levels?
Pauli exclusion principle
Hund's rule
Aufbau Principle
None of the above
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