Everything Electrons Review

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Pro-Core Review: Everything Electrons! (Electron Structure, Ions, and PTrends)
Use the Periodic Table below for questions 1- 10.
1.) A Calcium ion (Ca2+) contains how many protons, neutrons, and electrons?
a. 20, 20, 18
b. 20, 19, 18
c. 20, 18, 20
d. 18, 20, 20
2.) An Oxygen ion (O2-) contains how many protons, neutrons, and electrons?
a. 8, 15, 10
b. 8, 16, 10
c. 8, 8, 10
d. 10, 8, 8
3.) A Magnesium ion (Mg2+) contains how many protons, neutrons, and
electrons?
a. 12, 10, 24
b. 12, 12, 10
c. 12, 10, 10
d. 10, 12, 12
4.) A Hydrogen ion (H+) contains how many protons, neutrons, and electrons?
a. 1,2,3
b. 1,0,1
c. 1,1,1
d. 1,0,0
5.) A Nitrogen ion (N3-) contains how many protons, neutrons, and electrons?
a. 7,7,7
b. 10,7,7
c. 7,10,7
d. 7,7,10
6.) Which atom has an electron configuration of 1s22s1 ?
a. Oxygen
b. Sulfur
c. Lithium
d. Phosphorus
7.) Which atom has an electron configuration of 1s22s22p4 ?
a. Oxygen
b. Sulfur
c. Lithium
d. Phosphorus
8.) Which atom has an electron configuration of 1s22s22p63s23p3 ?
a. Oxygen
b. Sulfur
c. Lithium
d. Phosphorus
9.) Which of the following electron configurations is for an atom located in the
same group on the periodic table as an atom with an electron configuration
of 1s22s22p63s23p3 ?
a. 1s22s22p1
b. 1s22s22p2
c. 1s22s22p3
d. 1s22s22p6
10.) In World War I, chemical weapons were developed to injure and kill soldiers.
Commonly used gases included mustard gas and phosgene. Bromine was used
in some chemical weapons because it is highly reactive. Another element with
similar reactivity was also used in chemical weapons. Which of the following
could be the electron configuration for such an element?
a. 1s22s22p63s23p6
b. 1s22s22p63s23p4
c. 1s22s22p63s23p5
d. 1s1
Use the following chart for questions 11-13.
11.)
What is an explanation for why the electronegativity in the table
increases as the atomic number and then returns to about 1 and starts to
climb again?
a. Electronegativity drops when a new group in the Periodic Table
begins.
b. Electronegativity drops when a new period in the Periodic Table
begins.
c. Electronegativity drops when a new isotope is represented on the
graph.
d. Electronegativity drops when valence electrons are given away or
acquired.
12.)
Which family of elements represented on the graph has the lowest
electronegativities?
a. The Halogens
b. The Alkali Metals
c. The Semi-conductors
d. The Alkaline-Earth Metals
13.)
Which family of elements represented on the graph has the highest
electronegativities?
a. The Halogens
b. The Alkali Metals
c. The Semi-conductors
d. The Alkaline-Earth Metals
14.)
Moving across a period on the periodic table, which two atomic
properties follow the same trend?
a. Atomic radius and ionization energy
b. ionization energy and ionic radius
c. ionization energy and electronegativity
d. ionic radius and electronegativity
15.)
a.
b.
c.
d.
Which of the following periodic relationships is true?
ionic radius of Br− > atomic radius of Br
electronegativity of B > electronegativity of C
atomic radius of Na < atomic radius of Mg
first ionization energy of Rb > first ionization energy of K
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