Metalloids Answers

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1
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Which element is a semiconductor?

A
germanium
B
aluminum
C
tin
D
iodine
2
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Which element is a metalloid?

A
selenium (Se)
B
germanium (Ge)
C
phosphorus (P)
D
iodine (I)
3

Which lists the elements in order from least conductive to most conductive?

A
nitrogen (N), antimony (Sb), bismuth (Bi)
B
nitrogen (N), bismuth (Bi), antimony (Sb)
C
antimony (Sb), nitrogen (N), bismuth (Bi)
D
bismuth (Bi), antimony (Sb), nitrogen (N)
4

Which statement describes a property that is unique to metalloids?

A
Metalloids are shiny.
B
Metalloids are semiconductive.
C
Metalloids are solid.
D
Metalloids are brittle.
5

Which metalloid has five valence electrons in the fourth electron shell?

A
antimony
B
germanium
C
selenium
D
arsenic
6

The table shows columns that Franklin uses to organize his notes on the properties of elements. His notes state that some elements are widely used in semiconductors.Where should Franklin place this property in his table?

Question illustration
A
only in the column for metalloids
B
only in the column for nonmetals
C
in the columns for metalloids and for nonmetals
D
in the columns for metals and for metalloids
7

The design of a new computer processor requires that electric current be carefully controlled. Why might an engineer want to use a metalloid when designing a new computer processor?

A
Metalloids are amphoteric.
B
Metalloids are semiconductors.
C
Metalloids are brittle.
D
Metalloids are shiny.
8

Which metalloid has three valence electrons?

A
boron
B
arsenic
C
silicon
D
lithium
9

Which groups on the periodic table contain metalloids?

A
Groups 1–2
B
Groups 3–12
C
Groups 13–16
D
Groups 17–18
10

How does the number of valence electrons in atoms of metalloids explain why metalloids are semiconductors?

A
They have one or two valence electrons, so they cannot lose electrons easily.
B
They have one or two valence electrons, so they can lose or gain electrons.
C
They have three to six valence electrons, so they cannot lose electrons easily.
D
They have three to six valence electrons, so they can lose or gain electrons.

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