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OBJ 23 Study Guide-Per Table Part Three



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

All three of the elements shown below are in period four.
mc001-1.jpg
How many electron shells does each atom of calcium contains, and what is the atomic mass of titanium?
a.
All elements in period 4 have 4 electron shells. Titanium’s atomic mass is 47.9
b.
All elements in the 4th period have 6 electron shells. Titanium’s atomic mass is 47.9
c.
All elements in period 4 have 4 electron shells. Titanium’s atomic mass is 22
 

 2. 

A periodic table of the elements is shown below.
mc002-1.jpg
The circled elements share which characteristic?
a.
They have the same number of electrons.
b.
They rarely form chemical bonds.
c.
They are alkali metals
 

 3. 

In the periodic table shown below, some elements are shaded.

mc003-1.jpg
Which shaded element shown above has the least amount of mass and the least amount of protons?
a.
helium (He)
b.
neon (Ne)
c.
argon (Ar)
 

 4. 

In the periodic table shown below, some elements are shaded.

mc004-1.jpg
Based on its position in the periodic table, which element is the heaviest?
a.
helium (He)
b.
krypton (Kr)
c.
neon (Ne)
 

 5. 

A periodic table of the elements is shown below.
mc005-1.jpg
Based on their locations on the periodic table, which two elements share the most similar chemical properties?
a.
Be and Ba
b.
S and Sn
c.
H and I
 

 6. 

All three of these elements are in the second period.
12.0
C
Carbon
6
14.0
N
Nitrogen
7
15.9
O
Oxygen
8
Two-Part Question
How many electron shells does each atom of nitrogen contain, and what is the atomic number of carbon? 
a.
They all have 4 electron shells. Carbon’s atomic number is 6.
b.
Nitrogen has 7 electron shells. Carbon’s atomic mass is 12.0
c.
They all have 2 electron shells. Carbon’s atomic number is 6.
 

 7. 

Examine the nobel gases shown below in group 18.
mc007-1.jpg
Two-Part Question
A) What is the number of valence electrons for Neon (Ne), Argon (Ar), and Krypton (Kr)?
B) Which of these elements only has two protons?
a.
8 valence electrons, and Helium has two protons.
b.
6 valence electrons, and  Argon has two protons
c.
8  valence electrons, and Neon has two protons
 

 8. 

Examine the three shaded elements shown below in the 4th period.
mc008-1.jpg
A property that elements Fe, Co and Ni have in common is that they are all...?
a.
transition metals.
b.
chemically inert.
c.
poor electrical conductors.
 

 9. 

Use the Periodic Table below to answer the following question.
mc009-1.jpg
How many protons does the element Neon  (Ne) have and how many electron shells does it have? 
a.
2 protons, and 8 electron shells
b.
10 protons, and  2 electron shells
c.
10 protons, and 18 electron shells
 

 10. 

The periodic table of elements is shown below.
mc010-1.jpg
Which statement best describes the reactivity of the shaded elements nitrogen (N), oxygen (O), and fluorine (F)?
a.
Oxygen is the most reactive of all the elements listed.
b.
The nonmetals decrease in reactivity from right to left in the same period.
c.
The nonmetals increase in reactivity from right to left in the same period.
 



 
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