How is the formula for a binary compound written?

Answer:
A binary compound has two atoms in it eg sodium chloride, NaCl; hydrogen, H2; The symbols of the two atoms are written - the more electronegative element symbol is written second if there is a choice to be made ie metals go first.
First answer by ID0403650721. Last edit by Cmcnaught. Contributor trust: 41 [recommend contributor recommended]. Question popularity: 1 [recommend question].