Which molecular formula is also an empirical formula?
A. PCl3
B. C2H4
C. H2O2
D. C6H12O6

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).

nuhygjhuhuouh9oygyuhuh8h9guig97uogh8uog978o0rfyhkmkv h