Refrigerant-22 can be written as R₀₂₂

Where,X = 0 = Number of carbon atoms (C)

So,      X+1 =1

Y = 2 = Number of hydrogen atoms (H)

So,      Y–1 =1

            Z = 2 = Number of fluorine atoms (F)

So,      Z = 2

Now, to balance the atoms we use the relation,

Balance = 4 – Number of (H+F) atoms

Balance = 4 – 3

Balance = 1

So, it is evident that, the balance atoms for chlorine (C) i.e. chlorine atoms = 1.

Thus, the chemical formula:C₁H₁F₂C1₁.

Hence, the correct option is (C).