W.L.Bragg and Wt Bragg derived a mathematical relation to determine interatomic distances from _____________ patterns.
X-ray diffraction
Wavelength
Interatomic distance
Crystal diffraction
Increased ______ causes the carbon atoms to splits in diamond.
Thermal energy
wind energy
kinetic energy
vibrational energy
Which bond connects the carbon atom in a diamond crystal?
valence bond
covalent bond
coordinate bond
ionic bond
________________ is a good example of covalent crystal .
Diamond
Ice
Graphite
Charcoal
_________________ crystal consists of an assemblage of positive ions immersed in a sea of mobile electrons.
Molecular
Covalent
Metallic
Ionic
Which crystal vapourize at 7000oC?
sodium chloride
graphite
diamond
silicon carbide
Graphite is a covalent network crystal but what is its exceptional property?
High melting point
low volatile
bad conduction
good conduction
An example of metal deficiency defect is .
NaCl
AgCl
CsCl
FeS
Which crystal is not made up of ions?
covalent network crystals
ion crystal
both a and b
none of these
Diamond is a _______ crystal.
opaque
transparent
translucent
none of the above