“na2so3” represents sodium sulfite. what does the 4 mean in the formula 4na2so3? a. there are four atoms of sodium. b. there are four atoms of sodium sulfite. c. there are four molecules of sodium sulfite. d. there are four elements in sodium sulfite.

option c

Explanation:

(C) .There are four molecules of sodium sulfite.

Explanation:

means that there are four molecules of sodium sulfite.

Molecule is defined as a group of atoms bonded together. They are smallest unit of the substance which participates in a chemical reaction.

Atom is defined as smallest unit of matter which composed of electrons , protons and neutrons.

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