Which of the following elements, if doped into silicon, would give an n-type semiconductor?
Al
P
C
O
12 The density of a crystal depends on all the following except __________.
Number of atoms
Its mass
Its geometry
Volume of the unit cell
13 Which of the following is not true of liquids?
The inability of a liquid to flow enables it to assume the shape of the container
A liquid never expands to fill the container
The characteristics of a liquid lie between those of a solid and a gas
Particles of liquid are free to move from one point to another
14 Which group of elements in the periodic table is known for semiconductor behaviour?
group I
group II
group III
group IV
15 Which of the following is a pure substance made up of one type of atom?
An element
A mixture
A compound
A solution
1
Expert's answer
2015-05-12T09:48:20-0400
11. P 12. Its geometry 13. The inability of a liquid to flow enables it to assumethe shape of the container 14. group IV 15. An element
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