What kind of chemical reaction does the chemical equation sodium + chlorine → sodium chloride represent?
a. combustion
b. decomposition
c. single replacement
d. synthesis

Option (D) is the correct answer.

Explanation:

A synthesis reaction is defined as the reaction in which two molecules or atoms combine together to result in the formation of a compound.

For example, , is a synthesis reaction.

Decomposition reaction is a reaction in which a reactant or substance breaks into two or more substances.

For example, , is a decomposition reaction.

In a single replacement reaction, an element replaces one atom from a compound.

For example,

Thus, we can conclude that the chemical equation represent synthesis reaction.