How many atoms are required to form a molecule?

Atoms and many molecules together to create a compound are what make up molecules. No chemical compound's basic or fundamental unit is a molecule.'

As is well known in academic circles, atoms are the basic building block of every element.
In order to create molecules, atoms must combine.
When two atoms are joined, molecules are also formed in this situation.
And if we combine two or more, then molecules are formed under these circumstances as well.
Therefore, it is evident from the aforementioned two facts that molecules require a minimum of two atoms and a maximum of an unlimited number of atoms in order to form. Additionally, the quantity of atoms used to create molecules is determined by the necessity or demand of the final product.

Here are some examples of molecules:
-Sodium chloride (NaCl) is a molecule that is created when the atoms sodium (Na) and chlorine (Cl) combine (Cl).
Three hydrogen atoms and one nitrogen atom combine to produce the chemical known as ammonia (NH₃).
Therefore, the creation of molecules requires at least two atoms.

Hence option A is correct.