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WorksheetsQuantum Theory
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
How many quantum numbers are needed to describe the energy state of an electron in an atom?
a)
1
b)
2
c)
3
d)
4
2.
What atom matches this electron configuration?
1s22s22p63s2
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
3.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
4.
The angular momentum quantum number indicates the
a)
orientation an orbital around the nucleus.
b)
shape of an orbital.
c)
direction of the spin of the electron in its orbital.
d)
main energy level of an orbital.
5.
An electron fro which n=4 has more ____ than an electron for which n=2.
a)
spin
b)
particle nature
c)
energy
d)
wave natrue
6.
The set of orbitals that are dumbbell shaped and directed along the x, y, and z axes are called
a)
d orbitals.
b)
p orbitals.
c)
f orbitals.
d)
s orbitals
7.
The total number of orbitals that can exist at the second main energy level is
a)
2
b)
3
c)
4
d)
8
8.
How many orientations can an d orbital have about the nucleus?
a)
1
b)
2
c)
3
d)
5
9.
What is the electron configuration for nitrogen?
a)
1s2 2s2 2p3
b)
1s2 2s3 2p2
c)
1s2 2s3 2p1
d)
1s2 2s2 2p2 3s1
10.
The distance traveled between two successive peaks of a waves is the
a)
speed
b)
frequency
c)
wavelength
d)
energy
11.
A line spectrum is produced when an electron moves from one energy level
a)
into the nucleus.
b)
to another position in the same sublevel.
c)
to a higher energy level.
d)
to a lower energy level.
12.
If electrons in an atom have the lowest possible energies, the atom is in the
a)
ground state.
b)
inert state.
c)
excited state.
d)
radiation-emitting state.
13.
An orbital that can never exist according to the quantum description of the atom is
a)
6d.
b)
3f.
c)
3d.
d)
8s.
14.
According to the Bohr model of the atom, the single electron of a hydrogen atom circles the nucleus
a)
in specific, allowed orbits.
b)
in one fixed orbit at all times.
c)
at any of an infinite number of distances, depending on its energy.
d)
counterclockwise.
15.
The statement that no two electrons in the same atom can have the same four quantum numbers is
a)
the Pauli exclusion principle.
b)
Hund's rule.
c)
Bohr's law.
d)
the Aufbau principle.
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