Chemistry: Matter and Change

Chapter 6: The Periodic Table and Periodic Law

Standardized Test Practice

1
Why was Mendeleev's periodic table widely accepted

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A)He organized the first 14 known elements.
B)He predicted the existence and properties of undiscovered elements.
C)He was the first to notice a pattern of similar properties among elements.
D)His periodic table listed all of the elements in the correct order.
2
Which group on the periodic table is known as the halogens?
A)group 1A
B)group 2A
C)group 8A
D)group 7A
3
Which of the following elements is a metalloid?
A)As
B)Na
C)W
D)F
4
If the inner transition elements were placed in the space occupied by the heavy black line above, what would result?

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A)Electron configurations of the other elements would change.
B)There would be no effect.
C)The periodic table would be too wide to comfortably fit into most books.
D)More elements would become radioactive.
5
Looking only at the box above, what can you say for certain about the element two spaces to the left of oxygen on the periodic table?

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A)The element is a liquid.
B)The element will have atomic number 6.
C)The element's atomic weight will be 12.
D)The element's name will begin with the letter M.
6
What characteristic do atoms in the same group of elements share?

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A)They have the same atomic mass.
B)The have the same number of electron orbitals.
C)They have the same number of valence electrons.
D)They have similar physical properties.
7
Elements in the d block are also known as _______________.
A)alkali metals
B)alkaline earth metals
C)transition metals
D)lanthanide metals
8
Which of the following is the general valence electron configuration for the alkaline earth elements?
A)ns1
B)ns2
C)ns2np1
D)ns2np2
9
Why are there no d block elements until period four?

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A)The d sub-orbital does not exist for the first three orbitals.
B)The d sub-orbital does not exist for the first two orbitals, but the 4s orbital fills before the 3d orbital.
C)The spots above the d block represent undiscovered elements.
D)The d sub-orbital is unstable.
10
Why is helium included with the noble gases, even though it has only two valence electrons?

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A)The p sub-orbital does not exist for period 1.
B)Helium was discovered first.
C)Helium's missing electrons cause it to be lighter than air.
D)Helium's electron configuration is incorrect.
11
Atoms that lose electrons to form positive ions are __________.
A)nonmetals
B)metalloids
C)metals
D)noble gases
12
Which element has the lowest first ionization energy?
A)Li
B)Na
C)K
D)Cs
13
The ionic compound, sodium chloride, is formed from atoms of the elements sodium and chlorine. What happens to the size of each atom when it forms an ion?
A)Sodium increases in size and chlorine increases in size.
B)Sodium increases in size and chlorine decreases in size.
C)Sodium decreases in size and chlorine decreases in size.
D)Sodium decreases in size and chlorine increases in size.
14
Which element from the table would you expect to form a 3+ ion?

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A)Be
B)B
C)C
D)N
15
What group generally has the greatest electronegativity

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A)alkali metals
B)alkaline earth metals
C)noble gases
D)halogens
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