Question

which among the following is a good conductor of electricity and brittle?
a) sulphur
b) phosphorus
c) graphite
d) iron​

Answer 1

Answer:

Graphite is a good conductor of electricity and brittle

Explanation:

Sulphur

• It is a non-metal and it is a poor conductor of heat and electricity since the electrons are not free to move.

Phosphorus

• Phosphorus is also non-metal and does not conduct electricity.

• Also, the electrical conductivity of phosphorus is zero.

Graphite

• Graphite is a non-metal and it is a good conductor of electricity.
• It is so soft and brittle because the carbon atoms in graphite are bonded by only three strong covalent bonds in a two-dimensional ‘layer lattice’.

Iron

• Iron is a metal and a good conductor of electricity, but it is not brittle.