The Band Structure of Semiconductors Differs from That of Metal

question 144

Multiple Choice

The band structure of semiconductors differs from that of metal conductors in that

• A)metal bands are relatively empty while semiconductor bands are nearly full.
• B)metal bands are nearly full while semiconductor bands are relatively empty.
• C)metal conduction bands are lower in energy than valence bands while semiconductor conduction bands are higher in energy than valence bands.
• D)metal conduction bands are higher in energy than valence bands while semiconductor conduction bands are lower in energy than valence bands.
• E)valence bands in metals are either partially empty or overlap with conduction bands while these bands in semiconductors are separated in energy by a small gap.

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Definitions:

Concrete Operations

A stage in cognitive development, according to Piaget, where children gain the ability to think logically about concrete events and understand the concept of conservation.

Cognitive Development

The process of growth and change in intellectual/mental abilities such as thinking, reasoning, and understanding.

Modeling Clay

A pliable material used in arts and crafts, which can be shaped and molded into various forms, often used for creating sculptures.

Conservation

A concept in cognitive development where a child understands that changing the form of a substance or object does not change its amount, overall volume, or mass.