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Unit 2 Part 1
Test Description: Parts of the Atom, Atomic Theory, Light, Electron Configuration, and Average Atomic Mass
Instructions: Answer all questions to get your test result.
1) When a neutral atom gains five electrons, it becomes an ion with a charge of:
A
+5
B
+3
C
-3
D
-5
2) Which of the following has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d8
A
Co
B
Cu
C
Ni
D
Zn
3) What information is needed in order to determine if a particle with 4 protons is an atom or an ion?
A
Atomic Number
B
Number of Neutrons
C
Number of Electrons
D
Atomic Mass
4) How many protons are in an atom of Sulfur-32?
A
14
B
15
C
13
D
16
5) Which of the following statements explains the Pauli Exclusion Principle?
A
Each suborbital in the same energy level gets 1 electron before any other gets a second
B
Electrons have like spins
C
Electrons with the same spin cannot be in the same suborbital
D
All atoms react to achieve a stable octet
6) Ions with a positive charge are called:
A
Protons
B
Electrons
C
Anions
D
Cations
7) Which element is found in the f-block on the periodic table?
A
Uranium (U)
B
Sodium (Na)
C
Sulfur (S)
D
Iron (Fe)
8) How many electrons are in an uncharged atom of lithium?
A
6
B
4
C
5
D
3
9) The lowest possible energy state of an electron is called its ________ state.
A
Neutral
B
Excited
C
Ground
D
Base
10) Two different isotopes of the same uncharged element must have the same number of:
A
Protons and electrons
B
Protons and nucleus
C
Neutrons and electrons
D
Neutrons and protons
11) Which of the following statements explains Hund’s rule?
A
Each suborbital in the same energy level gets 1 electron before any other gets a second
B
Electrons have like spins
C
All atoms react to achieve a stable octet.
D
Electrons with the same spin cannot be in the same suborbital
12) Which element has the outer electron configuration of 5d2?
A
Hafnium (Hf)
B
Titanium (Ti)
C
Germanium (Ge)
D
Zirconium (Zr)
13) The atomic number is equal to:
A
The number of protons plus electrons
B
The number of protons
C
The number of neutrons
D
The number of protons plus neutrons
14) The p oribtal consists of ______________ sub-orbital(s).
A
1
B
7
C
3
D
5
15) An atom becomes an ion by__________?
A
Having more protons than neutrons
B
Gaining or losing electrons
C
Having fewer protons than neutrons
D
Gaining or losing protons
16) As frequency of light increases...
A
Energy doesn't change
B
Wavelength gets shorter
C
Energy decreases
D
Wavelength gets longer
17) Who is known for the Saturian model?
A
Hantaro Nagaoka
B
Niels Bohr
C
John Dalton
D
James Chadwick
18) Who had the first 5 part atomic theory?
A
John Dalton
B
James Chadwick
C
Niels Bohr
D
J.J. Thomson
19) Who discovered the nucleus?
A
J.J. Thomson
B
Ernest Rutherford
C
Niels Bohr
D
John Dalton
20) Who is known for the plum pudding model?
A
Hantaro Nagaoka
B
J.J. Thomson
C
Ernest Rutherford
D
Niels Bohr
*select an answer for all questions
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