Which of the following has its atoms connected by valence bonds?
sodium chloride
diamond
graphite
none of these
Carbon atoms in a diamond crystal are in a state of
sp3 hybridization
sp2 hybridization
sp hybridization
sp2d hybridization
Diamond is a _______ crystal.
opaque
transparent
translucent
If the deviation occurs due to missing atoms, displaced atoms or extra atoms, the imperfection is named as
Schottky defect
Point defect
Frenkel defect
Metal excess defect
Which unit cell does the diamond cell have?
triclinic
trigonal
octahedral
tetrahedral
Which is the crystal that vapourizes at 7000oC?
silicon carbide
The total number of atoms per unit cell is bcc is
1
2
3
4
Which crystal is not made up of ions?
covalent network crystals
ion crystal
both a and b
____________ defect arise when an ions occupies an interestitial position between the lattice points.
The force that binds a metal ion to a number of electrons within its sphere of influence is known as
Covalent bond
Ionic bond
Coordinate bond
Metallic bond
