What does 2NaCl mean?

Answer 1

The term 2NaCl represents a chemical formula indicating the composition of a compound. In this case, it stands for two sodium (Na) atoms bonding with one chlorine (Cl) atom to form sodium chloride, which is commonly known as table salt. The subscript "2" indicates that there are two sodium atoms for every one chlorine atom in the compound.

Answer 2

2NaCl denotes two fundamental units - each consisting of a sodium cation and a chloride anion - of the ionic compound, sodium chloride. We know, of course, NaCl has a giant ionic structure and does not contain discrete units of NaCl.