The correct answer is option 2. MgCl2.
The formula of magnesium chloride is \( \text{MgCl}_2 \)
Magnesium chloride is an inorganic compound composed of one magnesium ion (\( \text{Mg}^{2+} \)) and two chloride ions (\( \text{Cl}^- \)). Therefore, the correct formula for magnesium chloride is \( \text{MgCl}_2 \). This compound is commonly encountered as a white crystalline solid, and it is used in various applications, including as a de-icer, in food additives, and in the preparation of magnesium metal. |
