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Electrons and quantum numbers
Electrons and quantum numbers
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1
What college did Mr. Schleder go to?
Michigan
Central
Western
Eastern
2
Quantum numbers are sets of numbers that describe the properties of
atomic orbitals
molecules
atoms
the atomic nucleus
3
How many valence electrons does Selenium (Se) have?
34
6
8
5
4
According to Bohr, electrons cannot reside at ____ in the figure below
point C
point D
point B
point A
5
How many electrons are needed to completely fill the fourth energy level?
18
32
40
8
6
The number of possible different orbital shapes for the third energy levels is
4
1
3
2
7
The French scientist Louis de Broglie theorized that
electrons could have a dual wave-particle nature
Bohr's model of the hydrogen atom was completely correct
light waves did not have a dual wave-particle nature
the natures of light and quantized electron orbits were not similar
8
Most of the volume of an atom is occupied by the:
electron cloud
nucleus
protons
nuclides
9
A three-dimensional region around a nucleus where an electron may be found is called a(n)
orbital
orbit
spectral line
electron path
10
Which element has 8 valence electrons?
Krypton
calcium
chlorine
oxygen
11
Which element would have 3 valence electrons?
Oxygen
Gallium
Carbon
Sodium
12
The element in the picture is potassium
True
False
13
If electrons in an atom have the lowest possible energies, the atom is in the:
state of shock!!!
excited state
ground state
inert state
14
The main energy levels of an atom are indicated by the
magnetic quantum numbers
principal quantum numbers
spin quantum numbers
orbital quantum numbers
15
According to the quantum theory of an atom, in an orbital
electrons travel around the nucleus in specific paths
an electron's position cannot be know precisely
electrons cannot be found
an electron has no energy
16
The specific wavelengths of light seen through a prism are called:
photoelectric effect
line-emission spectrum
continuous electromagnetic spectrum
electron configuration
17
The change of an atom from an excited state to the ground state always requires
absorbtion of energy
neither absorption or emission of energy
both absorption and emission of energy
emission of energy
18
The
P
orbitals are shaped like
circles
spheres
electrons
dumbbells
19
The number of orbitals for the
d
sublevel is
3
1
7
5
20
The angular momentum quantum number indicates the
shape of an orbital
main energy level of an orbital
direction of the spin of the electron in its orbital
orientation of an orbital around the nucleus
21
How many valence electrons does Strontium (Sr) have?
1
2
6
38
22
The model of the atom that is most accepted today is:
Bohr's Theory
The Quasi Theory
The Democritus Revenge Theory
The Quantum theory
23
The set of orbitals that are dumbbell shaped and directed along the x, y, and z axis are called
d orbitals
p orbitals
s orbitals
f orbitals
24
What was demonstrated to show that electrons not only move as particles but also as waves?
electrons demonstrated only interference
the electrons were called for interference on a long pass play in football
electrons demonstrated diffraction and interference
electrons demonstrated only diffraction
25
The name that Einstein gave to light moving in particles:
quantum
photoelectric
photon
moron
26
The region outside the nucleus where an electron can most probably be found is the
quantum
electron cloud
s sublevel
electron configuration
27
According to the particle model of light, certain kinds of light cannot eject electrons from metals because
the energy of the light is too low
the mass of the light is too low
the energy of the light is too high
the volume of the light is too small
28
If the third main energy level contains 15 electrons, how many more could it possibly hold?
1
17
3
0
29
This scientist created a theory of the atom where electrons moved about the nucleus in circular orbits.
de Broglie
Einstein
Bohr
Mad Max Planck
30
According to the Bohr model of the atom, the single electron of a hydrogen atom circles the nucleus
in specific, allowed orbits
in one fixed orbit at all times
counterclockwise
at any of an infinite number of distances
31
What is the total number of electrons needed to fill
ALL
the orbitals in the fourth main energy level?
16
8
4
32
32
The number of orbitals fro the
d
sublevel is
1
3
5
7
33
Whenever an excited hydrogen atom falls back from an excited state to its ground state, it
absorbs a photon of energy
emits radiation over a range of frequencies
absorbs specific frequencies of light
emits a photon of energy
34
Max Planck proposed that a hot object radiated energy in small, specific amounts called
electrons
quanta
hertz
waves
35
What particles in an atom are able to exist in any one of a number of energy states?
electrons
isotopes
protons
neutrons
36
The major difference between a 1
s
orbital and a 2
s
orbital is that
the 2s orbital can hold more electrons
the 2s orbital has a slighly different shape
the 2s orbital is at a higher energy level
the 1s orbital can have only one electron.
37
For the
f
sublevel, the number of orbitals is
18
9
5
7
38
How many electrons can occupy the
s
orbitals at each energy level
two, if they have opposite spins
one
two, if they have the same spin
no more than eight
39
How many orientations can an
s
orbital have about the nucleus
1
3
2
5
40
How many orbitals can exist at the third main energy level?
9
3
6
18
41
Which model of the atom explains the orbitals of electrons as waves?
Planck's theory
Rutherford's model
the Bohr model
the Modern Quantum model
42
A quantum of electromagnetic energy is called a(n)
photon
orbital
electron
excited atom
