Which one of the following is a good conductor of electricity?
Diamond
Graphite
Silicon
Amorphous carbon
B.
Graphite
Non metal are bad conductor of electricity but graphite is good conductor of electricity because in graphite hybridisation of carbon is sp2. Hence, one electron of each carbon atom is free which is responsible to conduct electricity.
Doping of silicon with boron leads to
n-type semiconductor
p-type semiconductor
superconductor
insulator
The electronic configuration of an element C is 1s2, 2s2, 2p6. The formula of substance containing only C will be
C8
C4
C2
C
C14 is
a natural non-radioactive isotope
an artificial non-radioactive isotope
an artificial radioactive isotope
a natural radioactive isotope