a. p-type semiconductor
b.n-type semiconductor
c. intrinsic semiconductor
d. isolating material
18 As the temperature of tungsten, Ce, ___________, its
resistivity increases and its conductivity ______.
a. decrease // increase
b. decrease // decrease
c. increase // increase
d. increase // decrease
19 As the temperature of tungsten, Ce, ___________, its
resistivity increases and its conductivity ______.
a. decrease // increase
b. decrease // decrease
c. increase // increase
d. increase // decrease
20 Another substance that in the solid state has the same
crystal structure as diamond is...
a. white tin
b. graphite
c. rutile
d. Water
21 The "Tin Plague" refers to...
a. low conductivity of white tin
b. allotropism by change in temperature of tin
c. high density of gray tin
d. the diamond-like structure of white tin
- 17 Doping Germanium With Selenium Gives A A P Type Semiconductor B N Type Semiconductor C Intrinsic Se 1 (207.52 KiB) Viewed 52 times
b. False
24 SrTiO₃ is a perovskite-type material.
a. TRUE
b. False
25 By doping germanium with other materials, different
types of semiconductors are produced. Select the type of
semiconductor that is produced by doping Ge with boron, B, and by
being doped with phosphorus, P, respectively:
a. n-type semiconductor // n-type semiconductor
b. n-type semiconductor // p-type semiconductor
c. p-type semiconductor // n-type semiconductor
d. p-type semiconductor // p-type semiconductor
26 Metallic chromium has a body-centered cubic structure
with all atoms at lattice points. The density of the metal is 7.19
gcm⁻³. Calculates the cell side length for chrome.