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Atomic Physics
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1.
(1 point)
An atom with the electron configuration 1s
2
2p
2
2p
6
3s
2
3p
6
3d
5
4s
2
has an incomplete
2p sublevel
Second principal energy level
Third principal energy level
4s sublevel
2.
(1 point)
What is the total number of electrons in a completely filled fourth principal level?
8
10
16
32
3.
(1 point)
The characteristic bright line spectrum of an element is produced when its electrons
Form a covalent bond
Form an ionic bond
Move to a higher energy state
Move to a lower energy state
4.
(1 point)
Which emanation has no mass and no charge?
Alpha
Beta
Gamma
Neutron
5.
(1 point)
In which system do molecule-ion attractions exist?
NaCl(aq)
NaCl(s)
C
C
6
H
12
O
6
(s)
6.
(1 point)
A particle accelerator can increase the kinetic energy of
An alpha particle and a beta particle
An alpha particle and a neutron
A gamma ray and a beta particle
A neutron and a gamma ray
7.
(1 point)
What is the total number of electrons needed to completely fill all of the orbitals in an atom's second principal energy level?
16
2
8
4
8.
(1 point)
An atom in an excited state can have an electron configuration of
1s
1s
1s
1s
1s
2
2s
2
2p
6
9.
(1 point)
Compared to the charge and mass of a proton an electron has
The same charge and smaller mass
The same charge and the same mass
The opposite charge and smaller mass
The opposite charge and the same mass
10.
(1 point)
What is the total number of sublevels in the fourth principal energy level?
1
2
3
4
11.
(1 point)
Which atom in the ground state has only one unpaired electron in its valence shell?
Aluminum
Silicon
Phosphorus
Sulfur
12.
(1 point)
The shape and bonding of a diatomic bromine molecule are best described as
Symmetrical and polar
Symmetrical and nonpolar
Asymmetrical and polar
Asymmetrical and nonpolar
13.
(1 point)
What is the oxidation number of sulfur in H
2
SO
4
?
0
-2
+6
+4
14.
(1 point)
When alpha particles are used to bombard gold foil, most of the alpha particles pass through undeflected. This result indicates that most of the volume of gold atom consists of
Neutrons
Protons
Deuterons
Unoccupied space
15.
(1 point)
When an alpha particle is emitted by an atom, the atomic number of the atom will
Decrease by 2
Increase by 2
Decrease by 4
Increase by 4
16.
(1 point)
Which of the following element has the corresponding valence subshell of 3p
4
? Atomic numbers are listed next to the elements.
Aluminum 13
Silicon 14
Sulfur 16
Chlorine 17
17.
(1 point)
Which of the following element has the corresponding valence subshell of 3p
6
? Atomic numbers are listed next to the elements.
Sulfur 16
Chlorine 17
Argon 18
Potassium 19
18.
(1 point)
Which of the following element has the corresponding valence subshell of 3s
1
? Atomic numbers are listed next to the elements.
Neon 10
Sodium 11
Magnesium 12
Aluminum 13
19.
(1 point)
Which of the following element has the corresponding valence subshell of 2p
4
? Atomic numbers are listed next to the elements.
Nitrogen 7
Oxygen 8
Neon 10
Magnesium 12
20.
(1 point)
What is the maximum number of electrons that can be found in the orbital denoted by the letter f?
10
14
16
18
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