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Duplicate of Quantum Theory Review
Duplicate of Quantum Theory Review
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Review MC questions for basic quantum theory designed for a college prep Chem I class.
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Questions
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Answers
1
For electrons to change from a 'ground' state to 'excited' state
the electron must stop moving.
energy must be absorbed.
radiation must be emitted.
energy must be released.
2
French scientist Louis de Broglie believed
electrons had a dual wave-particle nature.
light waves don't act like waves.
Bohr's model was completely correct.
the nature of light and electrons were not similar.
3
The statement that electrons occupy the lowest available energy orbital first is
Hund's Rule.
the Aufbau Principle.
Bohr's Law.
the Pauli Exclusion Principle.
4
If radiation A has a lower frequency than radiation B, then the wavelength of A is
exactly half of B.
shorter.
longer.
equal.
5
Arrows that point in opposite directions in orbital diagrams represent an electron's
speed.
charge.
energy level.
spin.
6
Visible light, x-rays, and radio waves all have the same
frequency.
wavelength.
speed.
energy.
7
The letter of sublevels with maximum number of electrons in each are
s:1, p:2, d:3, f:4
s:1, p:3, d:10, f:14
s:1, p:3, d:5, f:7
s:2, p:6, d:10, f:14
8
What element matches the electron configuration of: 1s
2
2s
2
2p
6
3s
2
3p
2
?
S
Mg
C
Si
9
How many characteristics did Schrodinger's equation provide to explain state of an electron?
3
2
4
1
10
Another name for an electron cloud is
orbital.
color.
orbit.
spectral emission.
11
The set of dumbbell-shaped orbitals are called
f orbitals
d orbitals
s orbitals
p orbitals
12
The longest type of waves found on the electromagnetic spectrum is
X-rays.
UV waves.
gamma rays.
radio waves.
13
What atomic sublevel is next in energy following 4p?
4f
4d
5p
5s
14
What is the maximum number of electrons that can occupy a single orbital?
2
10
1
6
15
If electrons are in the lowest possible energy state, the atom is in the
ground state.
nonreactive state.
excited state.
radiation emitting state.
16
Which of the following is correct?
Wavelength equals energy.
Wavelength equals frequency.
Wavelength is directly proportional to energy.
Wavelength is inversely proportional to frequency.
17
Which color in the visible light spectrum has the lowest frequency?
violet
green
blue
red
18
How many unpaired electrons does an atom of phosphorus have?
1
2
6
3
19
How many orientations does the s orbital have about the nucleus?
3
2
5
1
20
The 3-dimensional region outside the nucleus where electrons are most probably found is
electron cloud.
electron configuration.
s sublevel.
quantum.
