For each part draw both the the cation and the anions as standalone ions. For each organic ion, draw just the most common Lewis structure, and do not draw alternative resonance forms. You can't put brackets and an overall charge in the answer. instead put the formal charge on each atom in the structure which should add up to the charge on the ion1.Calcium carbonate2.Magnesium hydroxide

the answer to this question is 3.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).