Which bonds connect the carbon atoms in a diamond crystal?
valance bond
covalent bond
coordinate bond
ionic bond
The ability of certain ultra cold substances to conduct electricity without resistance is called
n- type semiconductors
p- type semiconductors
Superconductors
Conductors
Increased ______ causes the carbon atoms in diamond to split.
Thermal energy
wind energy
kinetic energy
vibrational energy
Which of the following is transparent?
coal
lead
graphite
diamond
Which of the following has 1.54 Ao bond length throughout the crystal?
sodium chloride
silicon carbide
In the Bragg's equation for diffraction of x rays n' represent
The number or moles
Avagadro number
A quantum number
Order of reflection
Carbon atoms in a diamond crystal are in a state of
sp3 hybridization
sp2 hybridization
sp hybridization
sp2d hybridization
An example of metal excess defects is
Agcl
Nacl
Cscl
Fes
The total number of atoms per unit cell is bcc is
1
2
3
4
The semi conductors which exhibit conductivity due to the flow of excess negative electrons are called
p -type semiconductos
n - type semiconductors
Scoper conductors
Semiconductors