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BISD Chem: Electrons and quantum numbers Flashcards | StudBud
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BISD Chem: Electrons and quantum numbers
BISD Chem: Electrons and quantum numbers
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1
Which of these is an
impossible
set of quantum numbers?
(3, 2, -2, -1/2)
(1, 0, 0, 1/2)
(5, 1, 1, 1/2)
(5,4,-4 -1/2)
2
Most of the volume of an atom is occupied by the:
nuclides
electron cloud
nucleus
protons
3
What is the total number of electrons needed to fill
ALL
the orbitals in the fourth main energy level?
16
32
4
8
4
The French scientist Louis de Broglie theorized that
light waves did not have a dual wave-particle nature
electrons could have a dual wave-particle nature
the natures of light and quantized electron orbits were not similar
Bohr's model of the hydrogen atom was completely correct
5
The region outside the nucleus where an electron can most probably be found is the
quantum
s sublevel
electron cloud
electron configuration
6
The
P
orbitals are shaped like
electrons
circles
dumbbells
spheres
7
The model of the atom that is most accepted today is:
The Quantum theory
Bohr's Theory
The Democritus Revenge Theory
The Quasi Theory
8
Which model of the atom explains the orbitals of electrons as waves?
the Bohr model
Planck's theory
Rutherford's model
the Modern Quantum model
9
Which element has 8 valence electrons?
chlorine
Krypton
calcium
oxygen
10
Which of these represents an electron in an f orbital?
(5, 3, 1, 1/2)
(5,2,-1 -1/2)
(3, 2, -2, -1/2)
(5, 3, 0, 1/2)
11
The number of orbitals for the
d
sublevel is
3
5
1
7
12
This scientist created a theory of the atom where electrons moved about the nucleus in circular orbits.
Bohr
Einstein
Mad Max Planck
de Broglie
13
The change of an atom from an excited state to the ground state always requires
both absorption and emission of energy
absorbtion of energy
neither absorption or emission of energy
emission of energy
14
Which of these represents an electron in a d orbital?
(5,1,-1 -1/2)
(3, 2, -2, -1/2)
(5, 3, 0, 1/2)
(5, 3, 1, 1/2)
15
Max Planck proposed that a hot object radiated energy in small, specific amounts called
electrons
hertz
waves
quanta
16
For the
f
sublevel, the number of orbitals is
5
7
18
9
17
If the third main energy level contains 15 electrons, how many more could it possibly hold?
0
17
3
1
18
According to the Bohr model of the atom, the single electron of a hydrogen atom circles the nucleus
in one fixed orbit at all times
counterclockwise
in specific, allowed orbits
at any of an infinite number of distances
19
The specific wavelengths of light seen through a prism are called:
photoelectric effect
continuous electromagnetic spectrum
line-emission spectrum
electron configuration
20
The number of possible different orbital shapes for the third energy levels is
4
3
2
1
21
The major difference between a 1
s
orbital and a 2
s
orbital is that
the 2s orbital is at a higher energy level
the 2s orbital can hold more electrons
the 2s orbital has a slighly different shape
the 1s orbital can have only one electron.
22
How many electrons are needed to completely fill the fourth energy level?
32
8
18
40
23
The number of orbitals fro the
d
sublevel is
7
3
1
5
24
How many orientations can an
s
orbital have about the nucleus
2
3
1
5
25
A quantum of electromagnetic energy is called a(n)
electron
excited atom
photon
orbital
26
Which of these represents an electron in a p orbital?
(1, 0, 0, 1/2)
(5, 1, 1, 1/2)
(5,4,-4 -1/2)
(3, 2, -2, -1/2)
27
How many orbitals can exist at the third main energy level?
9
6
3
18
28
According to Bohr, electrons cannot reside at ____ in the figure below
point A
point B
point D
point C
29
The set of orbitals that are dumbbell shaped and directed along the x, y, and z axis are called
p orbitals
s orbitals
d orbitals
f orbitals
30
Which of these is a possible set of quantum numbers?
(7, 6, 2, 1/2)
(1, 0, -1, 1/2)
(5, 3, -2, 1/2)
(4,4,-1, -1/2)
31
A three-dimensional region around a nucleus where an electron may be found is called a(n)
orbital
orbit
spectral line
electron path
32
The name that Einstein gave to light moving in particles:
moron
photoelectric
photon
quantum
33
How many valence electrons does Selenium (Se) have?
8
6
34
5
34
What particles in an atom are able to exist in any one of a number of energy states?
electrons
neutrons
protons
isotopes
35
Which of these is an
impossible
set of quantum numbers?
(7, 3, 4, -1/2)
(7, 1, 1, 1/2)
(5,1,-1, -1/2)
(5, 3, 1, 1/2)
36
The main energy levels of an atom are indicated by the
magnetic quantum numbers
principal quantum numbers
spin quantum numbers
orbital quantum numbers
37
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
38
How many valence electrons does Strontium (Sr) have?
2
1
6
38
39
Which element would have 3 valence electrons?
Oxygen
Carbon
Sodium
Gallium
40
If electrons in an atom have the lowest possible energies, the atom is in the:
state of shock!!!
ground state
excited state
inert state
41
Which of these is a possible set of quantum numbers?
(5, 3, 4, 1/2)
(5,5,-1, -1/2)
(7, 5, 2, 1/2)
(7, 3, 1, 1/2)
42
The angular momentum quantum number indicates the
direction of the spin of the electron in its orbital
main energy level of an orbital
orientation of an orbital around the nucleus
shape of an orbital
43
According to the particle model of light, certain kinds of light cannot eject electrons from metals because
the energy of the light is too high
the energy of the light is too low
the mass of the light is too low
the volume of the light is too small
44
Quantum numbers are sets of numbers that describe the properties of
the atomic nucleus
atoms
atomic orbitals
molecules
45
According to the quantum theory of an atom, in an orbital
an electron's position cannot be know precisely
an electron has no energy
electrons cannot be found
electrons travel around the nucleus in specific paths
46
How many electrons can occupy the
s
orbitals at each energy level
one
two, if they have opposite spins
no more than eight
two, if they have the same spin
