Radon, a radioactive gas formed naturally in the soil, can cause lung cancer. It can pose a hazard to humans seeping into houses, and there is concern about this problem in many areas. A 1.5 mol sample of radon gas has a volume of 21.0 L at 33°C. What is the pressure of the gas?

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).

answer; 4 electrons;