Multiple choice Which of the following compounds naturally occurs in form of cotunnite? Krypton difluoride Lanthanum carbonate Lead carbonate Lead(II) chloride Reveal answer Fill a bubble to check yourself D Correct answer Explanation Lead(II) chloride is an inorganic compound which is a white solid under ambient conditions. It is poorly soluble in water. Lead(II) chloride is one of the most important lead-based reagents. It also occurs naturally in the form of mineral cotunnite.