Question

Write chemical formula for Freon

Answer 1

At the earliest stage chemical formulas are obtained of any molecule by determining the masses of all the elements that are combined to form a molecule after that two important types of formulas in chemistry are comes which are known as molecular formula and empirical formula.

Complete answer: Freon is generally registered as a trademark for the Chemours Company which generally uses it as a number of halocarbon products. This is mainly said to be stable in nature and nonflammable having low toxicity due to these reasons it is basically used as refrigerators and as aerosol propellants.
Freon includes the chlorofluorocarbon abbreviated of CFCs which causes ozone depletion and HCFCs i.e. chlorodifluoromethane. It is important to note that not all refrigerants of this type are labelled as Freon as Freon is a brand name for the refrigerants R-12, R-13B1, R-22, R-410A, R-502, and R-503 manufactured by The Chemours Company. The gas-based form of Freon is known to emit a strong chemical smell not too different to that of acetone, or nail polish remover. The term "freon" is also a generic descriptor of a fluorocarbon refrigerant.
From the above discussion we come to know that Freon are those which contains chlorofluorocarbon so the chemical formula for Freon can be represented as $CC{{l}_{2}}{{F}_{2}}$where the common name for Freon is dichlorodifluoromethane and it is having faint ethereal odour.

Note:
Dichlorodifluoromethane appears as a colorless gas having a faint ethereal odor. Shipped as a liquid confined under its own vapor pressure. Contact with the unconfined liquid can cause frostbite. Both components are noncombustible.