And can you help me with this as well? Think of this as a part 2 to my other Chemistry question.

Which is true of the reactants in this displacement reaction? fe + 2hcl fecl2 + h2 a. the reactants are located to the left of the arrow in the chemical equation. b. the reactants contain 1 iron atom, 2 hydrogen atoms, and 1 chlorine atom. c. the reactants are the atoms, molecules, or compounds formed in the reaction. d. the reactants have the same physical and chemical properties as the products.

Afamily is one another name for a group on the table of elements.

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?