Metalloids

Question 1

Which metalloid has three valence electrons?

Revolt · Accepted Answer

boron

Question 2

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

Revolt · Accepted Answer

nitrogen (N), antimony (Sb), bismuth (Bi)

Question 3

Solar panels convert light energy from sunlight into electrical energy. What material is most likely used in solar panels, and why?

Revolt · Accepted Answer

A metalloid is used because it is a semiconductor and can become more conductive when more light shines on it.

Question 4

The table shows columns that Brenda uses for her notes on the properties of elements. Her notes state that some elements can react to form basic compounds.Where should Brenda place this property in her table?

Revolt · Accepted Answer

in the columns for metals and for metalloids

Question 5

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

Revolt · Accepted Answer

arsenic

Question 6

Which property do metalloids share with nonmetals?

Revolt · Accepted Answer

Both can react to form acidic compounds.

Question 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?

Revolt · Accepted Answer

Metalloids are semiconductors.

Question 8

Which element is a metalloid?

Revolt · Accepted Answer

germanium (Ge)

Question 9

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?

Revolt · Accepted Answer

only in the column for metalloids

Question 10

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

Revolt · Accepted Answer

They have three to six valence electrons, so they can lose or gain electrons.

Metalloids Answers

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