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Metalloids Answers

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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.
2
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Which property do metalloids share with nonmetals?

A
Both are gases at room temperature.
B
Both can react to form acidic compounds.
C
Both are very poor electrical conductors.
D
Both can be pounded into thin sheets.
3

Which element is a metalloid?

A
selenium (Se)
B
germanium (Ge)
C
phosphorus (P)
D
iodine (I)
4

Which element in period 3 on the periodic table is a metalloid?

A
magnesium (Mg)
B
aluminum (Al)
C
silicon (Si)
D
sulfur (S)
5

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)
6

Which groups on the periodic table contain metalloids?

A
Groups 1–2
B
Groups 3–12
C
Groups 13–16
D
Groups 17–18
7

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

A
antimony
B
germanium
C
selenium
D
arsenic
8

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.
9

Which metalloid has three valence electrons?

A
boron
B
arsenic
C
silicon
D
lithium
10

Based on their locations on the periodic table, which best compares the properties of the metalloids arsenic (As) and antimony (Sb)?

A
Arsenic has a more metallic behavior than antimony because arsenic’s atoms have fewer electron shells.
B
Arsenic has a more metallic behavior than antimony because arsenic’s atoms have more electron shells.
C
Arsenic has a more nonmetallic behavior than antimony because arsenic’s atoms have more electron shells.
D
Arsenic has a more nonmetallic behavior than antimony because arsenic’s atoms have fewer electron shells.

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