The correct option is FLUORINE AND COPPER.
An ionic compound is usually formed by the combination of a metal and a non metal, the metal usually act as an electron donor while the non metal act as an electron acceptor. Thus, in ionic compounds, there is total transfer of electrons from the metal to the non metal. In the question given here, copper is the metal while the fluorine is the non metal.<span />
Explanation:
magnesium Hydroxide + Hydrochloric react together and give us magnesium chloride + water
Answer: The molar mass and molecular weight of 4Fe is 223.38.
