Concept explainers
(a)
Interpretation:
The value of x in iron oxide
(b)
Interpretation:
The average oxidation state of iron has to be calculated.
(c)
Interpretation:
The percentage of
Concept introduction:
Wustite:
Wustite is iron oxide with empirical formula of
(d)
Interpretation:
The angle at which atoms meet in face centered cubic unit cell has to be calculated.
Concept introduction:
Braggs law:
Where,
n is order of diffraction.
d is lattice spacing
(e)
Interpretation:
The doping of
Concept introduction:
Semiconductor: A material which can conduct electricity in range between a metal and an insulator is known as semiconductor. Addition of small amount of impurities increases conductivity of semiconductor and the process is known as doping. n-type and p-type are two types of doped semiconductors.
n-type: This is a type of doped semiconductor in which many free electrons are present in conduction band.
p-type: This is a type of doped semiconductor in which holes are present in valence band.
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