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11 questions
Who proposed that electrons are only found in specific, discrete circular orbits around the nucleus?
Albert Einstein
Erwin Schrodinger
Ernest Rutherford
Niels Bohr
If n = 3, what is the maximum number of electrons that can fit in this shell?
2
8
18
32
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
Which quantum number represents the shape of the orbital?
principal quantum number
azimuthal (angular momentum) quantum number
magnetic quantum number
spin quantum number
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)
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
Which quantum number represents the orientation of the orbital?
principal quantum number
azimuthal (angular momentum) quantum number
magnetic quantum number
spin quantum number
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
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
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
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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