20.Which of the following is NOT correct about Sodium chloride? [A] It is a covalent compound [B] It is also known as common salt [C] It is also used in de-icing of roadways during snowfall [D] It is used as a food preservative
In the diagram each molecule of sodium chloride contains one sodium ion and one chloride ion. FALSE: there are no molecules in sodium chloride, just ions.
