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Introduction to Metallurgy

why only sili...

Question

why only silicon is used in solar cells not polonium,tellurium or antimony?

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Solution

All the elements mentioned above are metalloid. Their electrical property is in between metals and non-metals.This type of group generally known as semi- conductors. Out of these Silicon is most widely used because of high abundance and cost-effectiveness of the element.

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Similar questions

Q. Melting point of polonium is less than that of tellurium.

Q. Match the column.
a) antimony e) p - type
b) indium f) n - type
c) carbon g) not a semiconductor
d) silicon h) semiconductor

S_{1} :

In electrolytic refining, the impurities from the blister copper deposits anode mud which contains antimony, selenium, tellurium, silver, gold and platinum. (from copper pyrites)

S_{2} :

The low grade ore of copper is leached with acid and is then treated with scrap iron or

H_{2}

S_{3} :

Siderite, curpite and argentite are oxide ores.

S_{4} :

Zone refining is very useful for producing semiconductor and other metals of very high purity, e.g., germanium, silicon, boron, gallium and indium.
Which of the following option is correct.
(T: True, F: False)

1.What is a solar cell ?

2.State two uses of solar cells.

3.State whether a solar cell produces a.c. or d.c.

4.Give one disadvantage of using a solar cell.

Q. What law of thermodynamics explains why only a fraction of the energy ingested by organism A is used in making new cells or growing?

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