Steel is an alloy based on iron and

Covalent bonds are formed by ___________ valence electrons.

Choose the elements having most number of compounds.

Carbon forms _________ compounds.

Melting point of diamond is

Choose the allotrope of carbon.

Group number of carbon is

Graphite is a good _________ of electricity.

Allotrope of carbon used to make black paint.

 Valency of carbon is