Write down the substitution reaction of methane with chlorine.

Write an example of substitution reaction.

Write down the addition reactions of acetylene with hydrogen and bromine.

Write equations of all the steps of the reaction of methane with chlorine in the presence of diffused sunlight.

Write down the composition of invar?

Write down the configuration of chlorine atom and chlorine ion.

Write down disproportionation reaction of Cu^+ ion

Describe the mechanism of electrophilic substitution reaction of benzene.

What is the substitution reaction? Write an example.

Comment on the reactions of dihydrogen with chlorine,