Midterm Exam

Name

Course year & Section

Date

An atom with five valence electrons is/are called __________.

• pentagon
• trivalent
• covalent
• pentavalent

What type of bonds are formed by the sharing of valence electrons with the neighboring atoms?

• double
• ionic
• covalent
• metallic

What is the name of a pure semiconductor material?

• intrinsic
• extrinsic
• n-type
• p-type

What material poses four valence electrons?

• insulator
• semi-insulator
• semi-conductor
• conductor

A/An __________material is one that has no impurities

• fundamental
• intrinsic
• extrinsic
• standard

What type of material is formed when trivalent material is doped with silicon or germanium?

• N-type
• N and P-type
• PN type
• P-type

What is the majority carrier in a P-type semiconductor?

• electron
• positive ion
• negative ion
• hole