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WorksheetsAtomic Theory, AAM & Electron Configuration
Total questions: 45
Worksheet time: 1hrs 1mins
Name
Class
Date
1.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
2.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
3.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
4.
The electron configuration of an atom is 1s22s22p6. The number of electrons in the atom is
a)
3
b)
6
c)
8
d)
10
5.
What do you start electron configuration with?
a)
1s2
b)
1d10
c)
1f14
d)
1p6
6.
What is this element?
1s22s22p63s23p6
4s23d104p6
1s22s22p63s23p6
4s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
7.
What element has the valence shell configuration
3s2 3p2
3s2 3p2
a)
Al
b)
B
c)
Si
d)
Ga
8.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
9.
Electron arrangement that uses arrows
a)
Electron configuration
b)
Shorthand configuration
c)
Lewis dot structure
d)
Orbital diagram
10.
Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle
11.
What does Pauli exclusion principle state ?
a)
states that each electron occupies the lowest energy orbital available
b)
states that a maximum of two electrons can occupy a single atomic orbital, but if only if the electros have opposite spins
c)
states that single electrons electrons with the same spin must occupy each-energy orbital before additional electrons with opposite spins can occupy the same orbitals
12.
What does Hund's rule states ?
a)
states that single electrons electrons with the same spin must occupy each-energy orbital before additional electrons with opposite spins can occupy the same orbitals
b)
states that each electron occupies the lowest energy orbital available
c)
states that a maximum of two electrons can occupy a single atomic orbital, but if only if the electros have opposite spins
13.
What is the chemical symbol for an element with 35 protons, 45 neutrons, and 36 electrons?
a)
Br
b)
Br+10
c)
Br-1
d)
Kr
14.
How many neutrons are in 20280Hg+2?
a)
80
b)
202
c)
122
d)
78
15.
Each row on the periodic table represents:
a)
an energy level
b)
a sublevel
c)
an electron
d)
an orbital
16.
There are 4 different types of subshells (orbitals) s,p,d,f.
a)
true
b)
false
17.
What is the noble gas shorthand electron for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p4
18.
Which is associated with more energy?
a)
2p
b)
2s
c)
3p
d)
1s
19.
24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?
What is the average mass of this element?
a)
74.92 amu
b)
24.97 amu
c)
75.01 amu
d)
74.51 amu
20.
Calcium has three different isotopes. One has a mass of 35.00 amu; another has a mass of 41.00 amu; and another has a mass of 40.00 amu. Which isotope is the most abundant of the three?
a)
40.00 amu
b)
41.00 amu
c)
35.00 amu
d)
impossible to tell
21.
Calculate the average atomic mass of silver.
a)
106.38649amu
b)
111.91896amu
c)
107.8677amu
d)
121
22.
Nitrogen has three occurring isotopes: Nitrogen-13, Nitrogen-14, Nitrogen-15. Which isotope is the most abundant?
a)
Nitrogen-13
b)
Nitrogen-14
c)
Nitrogen-15
d)
Based on the information given, it cannot be determined
23.
Atom 1 has Mass=12 Protons=6
Atom 2 has Mass= 14 Electrons=6
Are these atoms isotopes of each other or different elements?
Atom 2 has Mass= 14 Electrons=6
Are these atoms isotopes of each other or different elements?
a)
Different Elements - Mg & Si
b)
Different Elements - Ar & Ca
c)
Isotopes of Carbon
d)
Isotopes of Magnesium
24.
If X is the symbol for an element, which of the following two symbols represent isotopes of the same element?
I. 7735X II. 7733X III. 8137X IV. 8135 X
I. 7735X II. 7733X III. 8137X IV. 8135 X
a)
I and II
b)
III and IV
c)
I and IV
d)
I and III
25.
Isotopes are atoms of the same element that have the same number of __________ but different number of __________ . Therefore, isotopes of the same element have different masses.
a)
protons, neutrons
b)
protons, electrons
c)
neutrons, protons
d)
electrons, protons
26.
A neutral atom of Carbon-13 has ________ electrons and _________ neutrons
a)
13, 13
b)
6, 7
c)
7, 7
d)
6, 6
27.
Oxygen has 8 protons. What is oxygen's atomic number?
a)
16
b)
8
c)
15.999
d)
0
28.
Do the following atoms belong to the same element? Explain
Aluminum-27
An atom with 14 protons and 13 neutrons
Aluminum-27
An atom with 14 protons and 13 neutrons
a)
Yes because they have the same number of protons
b)
Yes because they have the same mass
c)
No because they have different number of protons
d)
No because they have different number of neutrons
29.
If neutral copper atom (atomic number 29) becomes an ion that has a charge of 2+, how many electrons does the resulting ion have?
a)
27
b)
28
c)
29
d)
31
30.
On the periodic table, how is atomic mass represented?
a)
As an average of the mass of different isotopes
b)
as the exact mass of every atom
c)
as the mass of the most common isotopes
d)
As the masses of all protons added together
31.
What is an ion?
a)
A Charged Atom
b)
A Large Atom
c)
A Small Atom
d)
A Cute Atom
32.
The atomic mass of an element is the ___.
a)
average of the mass number and the atomic number for the element
b)
weighted average of the masses of the isotopes of the element
c)
total mass of the isotopes of the element
d)
total number of subatomic particles in the nucleus
33.
What are the steps for finding the Average Atomic Mass?
a)
1) write given mass, 2) write given %, 3) % to decimal, 4) Mass x abundance decimal 5) Add
b)
1) % to decimal, 2) write given %, 3)write given mass, 4) Mass x abundance decimal 5) Add
c)
1) write given mass, 2) write given %, 3) % to decimal, 4) Mass divided by abundance decimal 5) Add
d)
1) write given mass, 2) write given %, 3) % to decimal, 4) Mass x abundance decimal 5) Subtract
34.
An element with 4.35% have a mass of 49.9461 amu, 83.79% have amass of 51.9405 amu, 9.50% have a mass of 52.9407 amu, and 2.36% have a mass of 53.9389amu.
a)
51.99 amu
b)
52.19 amu
c)
53.45 amu
d)
17.33 amu
35.
What charge does an atom have when it GAINS electrons?
a)
Positive
b)
Negative
c)
Neutral
36.
What is a representation of an ion?
a)
Li
b)
Na-22
c)
O-2
37.
What type of atom is this?
a)
Neutral atom
b)
Cation
c)
Anion
d)
Isotope
38.
What two particles determine the mass number?
a)
Protons and electrons
b)
Electrons and neutrons
c)
Protons and neutrons
39.
What type of atom is this?
a)
Normal Atom
b)
Cation
c)
Anion
d)
Isotope
40.
When an atom loses a valence electron, it becomes a(n) _____________ ion.
a)
positive
b)
negative
c)
neutral
d)
polyatomic
41.
An atom's atomic mass comes from its
a)
Nucleus
b)
Electron cloud
c)
Protons
d)
Electrons
42.
If an atom has an equal number of protons and electrons it is a...
a)
Positive ion
b)
Negative ion
c)
Isotope
d)
Neutral atom
43.
If an atom has more electrons than protons, it is a(n)
a)
Positive ion
b)
Negative ion
c)
Isotope
d)
Neutral atom
44.
Which answer choice describes the subatomic particles and their respective charges?
a)
p- e+ n
b)
p+ e n-
c)
p+ e- n
d)
p- e+ n
45.
Which type of model is shown?
a)
Plum Pudding
b)
Bohr / Orbits
c)
Electron Cloud
d)
Billiard Ball
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